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All questions of Verb for Class 1 Exam

As a young woman who had never given birth before, she ____ what the experience of childbirth ____ like.
  • a)
    doesn't know / will be
  • b)
    may not know / is
  • c)
    must not have known / will be
  • d)
    may not know / would be
  • e)
    couldn't have known / would be
Correct answer is option 'E'. Can you explain this answer?

Ravi dey answered
Explanation:
The correct answer is option 'E': "couldnt have known / would be."

Explanation of the answer:
1. The first part of the sentence states, "As a young woman who had never given birth before..." This implies that the woman has no prior experience with childbirth.
2. The second part of the sentence states, "...she ____ what the experience of childbirth ____ like." Here, we need to fill in the blanks to complete the sentence correctly.
3. We need to choose the verb tense and modal verb that accurately convey the idea that the woman's lack of experience prevents her from knowing what childbirth is like.
4. The modal verbs "doesn't know," "may not know," "must not have known," and "may not know" all express uncertainty or possibility, but they do not convey the idea that the woman's lack of experience prevents her from knowing.
5. The correct verb tense to use is the past perfect tense "couldnt have known" because it emphasizes that the woman's lack of experience occurred in the past and therefore prevented her from knowing what childbirth is like.
6. The correct modal verb to use is "would be" because it expresses the hypothetical nature of the experience of childbirth. Since the woman has never given birth before, she can only imagine or speculate about what the experience would be like.
7. Therefore, the correct answer is option 'E': "couldnt have known / would be," which means that as a young woman who had never given birth before, she couldn't have known what the experience of childbirth would be like.

Key Points:
- The woman has no prior experience with childbirth.
- The verb tense used is the past perfect tense "couldnt have known."
- The modal verb used is "would be" to express the hypothetical nature of the experience.
- The correct answer is option 'E': "couldnt have known / would be."

My girlfriend said I ____ her anything for her birthday, but I think I ____ her some flowers at least or a nice bottle of wine.
  • a)
    didn't need to buy / should buy
  • b)
    had to buy / can't have bought
  • c)
    should have bought / must buy
  • d)
    don't need to buy / don't have to buy
  • e)
    may not buy / may have bought
Correct answer is option 'A'. Can you explain this answer?

Edgy Education answered

To analyze the correct answer choice, let's break down the options and their meanings:
A: didn't need to buy / should buy
- "didn't need to buy" implies that there was no obligation to purchase a gift
- "should buy" suggests that it would be a good idea to buy a gift
B: had to buy / can't have bought
- "had to buy" indicates a requirement to purchase a gift
- "can't have bought" implies that the action of buying a gift is not possible
C: should have bought / must buy
- "should have bought" suggests that it would have been a good idea to buy a gift at a previous time
- "must buy" indicates a strong obligation to purchase a gift
D: don't need to buy / don't have to buy
- "don't need to buy" implies that there is no obligation to purchase a gift
- "don't have to buy" suggests that there is no requirement to buy a gift
E: may not buy / may have bought
- "may not buy" indicates the possibility of not purchasing a gift
- "may have bought" suggests the possibility of already having purchased a gift
Based on the meanings of the options and the context of the sentence, the correct answer is A: didn't need to buy / should buy. This choice aligns with the girlfriend saying that the speaker doesn't need to buy her anything, but the speaker still believes it would be a good idea to buy flowers or a nice bottle of wine.

After the voyaging ship was wrecked during a storm at sea, unfortunately, only two of the men on board ____ swim to the small island nearby.
  • a)
    might
  • b)
    were supposed to
  • c)
    could
  • d)
    were able to
  • e)
    had to
Correct answer is option 'D'. Can you explain this answer?

Ajay rane answered
Explanation:
The sentence talks about the unfortunate incident where a voyaging ship was wrecked during a storm at sea, and only two men on board were able to swim to the small island nearby. In this context, the correct option to fill the blank is 'were able to'.

Reasoning:

- Option 'a' - 'might' implies possibility, but the sentence needs a confirmation that the men were able to swim to the island.
- Option 'b' - 'were supposed to' implies obligation or expectation, but it does not fit the context of the sentence as it is not clear who expected or obligated the men to swim to the island.
- Option 'c' - 'could' implies ability or possibility, but it does not confirm that the men actually swam to the island.
- Option 'd' - 'were able to' implies ability, and it confirms that the men were successful in swimming to the island.
- Option 'e' - 'had to' implies necessity or obligation, but it does not fit the context of the sentence as it is not clear who obligated the men to swim to the island.

Therefore, the correct option is 'were able to'.

Road conditions ____ much in the last fifteen years, since the government hasn't invested anything to renew the roads.
  • a)
    must have improved
  • b)
    needn't have improved
  • c)
    didn't need to improve
  • d)
    ought to have improved
  • e)
    can't have improved
Correct answer is option 'E'. Can you explain this answer?

Ravi dey answered
Understanding the Correct Answer: "E. can't have improved"
The sentence in question discusses road conditions over a fifteen-year period, emphasizing that the government hasn’t invested in renewing the roads. Here’s why option 'E' is the correct choice:
Context of the Sentence
- The statement implies a direct correlation between government investment and road quality.
- If there has been no investment, it is reasonable to expect that road conditions would not improve.
Analysis of Option 'E'
- The phrase "can't have improved" suggests that it is impossible for road conditions to have improved given the lack of investment.
- This implies a strong logical conclusion based on the information provided.
Why Other Options are Incorrect
- a) must have improved: This option suggests certainty of improvement, which contradicts the stated lack of investment.
- b) needn't have improved: This indicates that improvement was not necessary, but does not directly address the impossibility of improvement given the context.
- c) didn't need to improve: This suggests that improvement was not required, but does not align with the expectation of deterioration without investment.
- d) ought to have improved: This indicates an expectation of improvement, which is again inconsistent with the lack of investment.
Conclusion
In summary, option 'E' is the most logical choice as it aligns with the premise that without government investment, improvement in road conditions is highly unlikely. The phrase "can't have improved" encapsulates the sentiment that given the circumstances, better road conditions are implausible.

One of the US national security advisers ____ there ____ better intelligence sharing before the September 11 attacks.
  • a)
    had acknowledged / can be
  • b)
    acknowledges / might be
  • c)
    has acknowledged / could have been
  • d)
    acknowledged / must be
  • e)
    would acknowledge / will have been
Correct answer is option 'C'. Can you explain this answer?

Arti nair answered

Explanation:

Context:
The sentence is discussing the need for better intelligence sharing before the September 11 attacks.

Analysis:
1. The sentence is in the past tense, so the correct verb form to use is "has acknowledged" or "acknowledged."
2. The use of "could have been" is appropriate to indicate a possibility in the past.

Correct Answer Justification:
The correct answer is option C: "has acknowledged / could have been." This is the most suitable choice as it correctly aligns the verb tenses and modal verbs in the sentence.

In this sentence, the national security adviser acknowledges the need for better intelligence sharing in the past, indicating a past action. The modal verb "could have been" is used to suggest a possibility of improved intelligence sharing before the September 11 attacks, which is also in the past. Therefore, option C is the correct choice for this sentence.

Most advanced aircraft now ____ at supersonic speeds.
  • a)
    could have fly
  • b)
    shouldn't have fly
  • c)
    are able to fly
  • d)
    had to fly
  • e)
    were supposed to fly
Correct answer is option 'C'. Can you explain this answer?

Most advanced aircraft now ____ at supersonic speeds:


  • Option A: could have fly

  • This option is grammatically incorrect as it should be "could have flown" instead of "could have fly".

  • Option B: shouldn't have fly

  • This option is grammatically incorrect as it should be "shouldn't have flown" instead of "shouldn't have fly". Additionally, it does not make logical sense as it implies that the aircraft should not have flown at all.

  • Option C: are able to fly

  • This option is correct grammatically and logically. It states that the most advanced aircraft are currently capable of flying at supersonic speeds.

  • Option D: had to fly

  • This option is grammatically incorrect as it should be "have to fly" instead of "had to fly".

  • Option E: were supposed to fly

  • This option implies that the aircraft were intended or expected to fly at supersonic speeds but may not necessarily be able to do so currently. It does not accurately represent the current situation.


Conclusion:

The correct answer is Option C: are able to fly. It accurately describes the capabilities of the most advanced aircraft currently, stating that they are capable of flying at supersonic speeds.

Although working conditions ____ in many occupations in the past few years, one can never be safe, particularly in places with higher risk occupations.
  • a)
    might improve
  • b)
    can't have improved
  • c)
    may have improved
  • d)
    could improve
  • e)
    needn't have improved
Correct answer is option 'C'. Can you explain this answer?

Freak Artworks answered
Working Conditions in Different Occupations

The statement talks about the working conditions in various occupations and suggests that although there may have been improvements in recent years, one can never be completely safe, especially in high-risk occupations. Let's analyze the given options:


  • Option A: Might improve

  • This option suggests that there is a possibility of improvement in working conditions. However, it does not indicate whether the improvements have already happened or not, which does not align with the context of the statement.


  • Option B: Can't have improved

  • This option states that it is impossible for the working conditions to have improved. However, this contradicts the initial statement, which mentions that there have been improvements in some occupations.


  • Option C: May have improved

  • This option implies that there is a possibility that the working conditions have indeed improved. It aligns with the initial statement, which suggests that there have been improvements in recent years.


  • Option D: Could improve

  • This option suggests that there is a potential for future improvements but does not address the current state of working conditions. It does not accurately reflect the information provided in the statement.


  • Option E: Needn't have improved

  • This option implies that there was no requirement or necessity for the working conditions to improve. However, the initial statement suggests that improvements have occurred.


Based on the analysis, option C: "May have improved" is the most suitable answer as it acknowledges the possibility of improvements in working conditions while aligning with the information provided in the statement.

We all think that Maria ____ an interesting person to meet as we ____ a lot of stories about her so far.
  • a)
    is / had heard
  • b)
    can be / heard
  • c)
    might have been / hear
  • d)
    would be / have heard
  • e)
    will be / will have heard
Correct answer is option 'D'. Can you explain this answer?

Edgy Education answered

To solve this question, we need to determine the correct verb forms to complete the sentence correctly. Here's a breakdown of the given options:
Option A: is / had heard
- This option uses the present tense "is" and the past perfect tense "had heard."
- However, the use of the past perfect tense does not fit logically in the sentence.
- The past perfect tense is usually used to indicate an action that happened before another past action, but there is no clear indication of a past action in the sentence.
Option B: can be / heard
- This option uses the modal verb "can be" and the simple past tense "heard."
- The use of "can be" implies possibility but does not fit well in the sentence.
- It is more appropriate to use a verb form that expresses a higher degree of certainty.
Option C: might have been / hear
- This option uses the modal verb "might have been" and the base form "hear."
- The use of "might have been" suggests a possibility in the past, but it does not fit well in the sentence.
- It is more appropriate to use a verb form that expresses a higher degree of certainty.
Option D: would be / have heard
- This option uses the modal verb "would be" and the present perfect tense "have heard."
- The use of "would be" indicates a hypothetical situation or expectation, which fits well in the sentence.
- The present perfect tense "have heard" indicates that the action of hearing happened before the present moment.
- This option provides a logical and grammatically correct completion to the sentence.
Option E: will be / will have heard
- This option uses the future tense "will be" and the future perfect tense "will have heard."
- While the use of the future tense is possible, it does not fit well in the sentence.
- The sentence does not provide a clear indication of a future event or time frame.
Therefore, the correct answer is option D: would be / have heard.

As well as being a popular tourist site, Trafalgar Square offers some of the most famous views in the country, ____?
  • a)
    has it
  • b)
    was it
  • c)
    doesn't it
  • d)
    hasn't it
  • e)
    didn't it
Correct answer is option 'C'. Can you explain this answer?

Muskaan reddy answered
Understanding the Question Structure
In the sentence provided, "As well as being a popular tourist site, Trafalgar Square offers some of the most famous views in the country, ____?" we need to choose an appropriate tag question that follows the structure of the main clause.
What is a Tag Question?
Tag questions are short questions added to the end of a statement, often used for confirmation. They mirror the auxiliary verb and the subject of the main statement.
Identifying the Main Clause
- The main clause is: "Trafalgar Square offers some of the most famous views in the country."
- The verb here is "offers," which is in the present simple tense.
Analyzing the Options
- a) has it - Incorrect; "has" is not the verb used in the main clause.
- b) was it - Incorrect; "was" suggests past tense, which doesn't match the present tense of the main clause.
- c) doesn't it - Correct; "doesn't" is the negative form of "does," which matches the present tense of "offers."
- d) hasn't it - Incorrect; "hasn't" implies possession or a completed action, not applicable here.
- e) didn't it - Incorrect; "didn't" indicates past tense, which conflicts with the present tense of "offers."
Conclusion
Thus, the correct answer is option c) doesn't it, as it appropriately forms a tag question that agrees with the present tense of the statement. This helps in confirming the assertion made about Trafalgar Square's views.

When an emergency vehicle is approaching with its lights and siren on, drivers ____ pull over and stop to get out of the way.
  • a)
    needn't have moved
  • b)
    must move
  • c)
    can't have moved
  • d)
    didn't need to move
  • e)
    must have moved
Correct answer is option 'B'. Can you explain this answer?


When an emergency vehicle is approaching with its lights and siren on, drivers are required to pull over and stop to get out of the way. The correct answer is B: must move.

Explanation:

When an emergency vehicle is approaching with lights and siren on, it indicates that there is an urgent situation requiring immediate attention. In such situations, drivers need to take immediate action to ensure the safety of the emergency vehicle and help it reach its destination quickly.

Here's why the other options are incorrect:


  • Option A: "needn't have moved" means that the action of pulling over and stopping was not necessary. However, in the case of an emergency vehicle, it is necessary for drivers to move out of the way.

  • Option C: "can't have moved" implies that it was impossible for drivers to move. This is not the case, as drivers are expected to make way for emergency vehicles.

  • Option D: "didn't need to move" suggests that the action of pulling over and stopping was not required. Again, this is incorrect as drivers must move for emergency vehicles.

  • Option E: "must have moved" implies that the action of pulling over and stopping was done, but it is not a requirement. However, in reality, drivers must move for emergency vehicles.


Therefore, the correct answer is B: must move.

If you plan to take a long trip in the car, you must get a full tank of gas or you ____ out of gas.
  • a)
    have to run
  • b)
    should have run
  • c)
    had better run
  • d)
    might run
  • e)
    are used to running
Correct answer is option 'D'. Can you explain this answer?

Harsh mehra answered
Explanation:

Importance of a Full Tank:
- When going on a long trip in a car, it is crucial to have a full tank of gas to avoid running out of fuel during the journey.
- Running out of gas can leave you stranded on the road, causing inconvenience and potential safety risks.

Use of 'Might Run':
- The phrase "you might run out of gas" suggests a possibility or likelihood of running out of fuel if you do not have a full tank before embarking on a long trip.
- It implies a warning or caution to ensure that you take necessary precautions before starting your journey.

Alternative Options:
- The other options, such as "have to run," "should have run," "had better run," and "are used to running," do not convey the same sense of possibility or warning about potentially running out of gas.
- "Might run" is the most appropriate choice in this context to emphasize the importance of having enough fuel for a long trip.

A good supervisor ____ with people who attempt too much than with those who try too little because hard-working staff contributes much to all aspects of work.
  • a)
    shouldn't work
  • b)
    would rather work
  • c)
    had better not work
  • d)
    is not able to work
  • e)
    can't work
Correct answer is option 'B'. Can you explain this answer?


When analyzing the given sentence, we can determine that the correct option should express the supervisor's preference for working with individuals who attempt too much, rather than those who try too little. Let's break down the options:


  • A: shouldn't work - This option does not express the supervisor's preference and does not make logical sense in the context of the sentence.

  • B: would rather work - This option accurately conveys the supervisor's preference for working with individuals who attempt too much. It implies that the supervisor prefers hard-working staff who contribute significantly to all aspects of work.

  • C: had better not work - This option does not convey the supervisor's preference and is not appropriate in this context.

  • D: is not able to work - This option does not express the supervisor's preference and does not fit the context of the sentence.

  • E: can't work - This option does not convey the supervisor's preference and is not suitable in this context.


Therefore, option B: would rather work is the correct answer as it accurately reflects the supervisor's preference for working with individuals who attempt too much rather than those who try too little.

You ____ down to about 30 kilometers an hour when you are driving through a school zone between dawn and dusk.
  • a)
    should have slowed
  • b)
    had to slow
  • c)
    were supposed to live
  • d)
    may have slowed
  • e)
    must slow
Correct answer is option 'E'. Can you explain this answer?

Freak Artworks answered

To answer this question, we need to understand the appropriate speed limit when driving through a school zone between dawn and dusk.
Key Points:
- The speed limit in a school zone during the designated hours is typically lower than the regular speed limit.
- The question asks for the correct form of expressing the requirement to slow down to about 30 kilometers an hour.
Options Analysis:
A:
should have slowed

- This option implies that slowing down is something that should have been done in the past, not necessarily in the present or future. It does not accurately express the requirement in the given context.
B:
had to slow

- This option suggests a mandatory requirement to slow down, which is not accurate. While it is essential to slow down in a school zone, there may be some flexibility in the exact speed, as long as it is within the designated limit.
C:
were supposed to live

- This option does not make sense in the context of driving in a school zone. It is unrelated to the requirement of adjusting speed.
D:
may have slowed

- This option suggests the possibility of slowing down, but it does not convey the requirement or expectation to do so. It is not an appropriate expression in this case.
E:
must slow

- This option accurately expresses the requirement to slow down to about 30 kilometers an hour in a school zone between dawn and dusk. It implies a mandatory action that must be taken.
Conclusion:
Based on the analysis, the correct answer is option E: must slow.

It is not easy for many civil servants to ____ on their salaries as the inflation rate is extremely high.
  • a)
    get by
  • b)
    turn up
  • c)
    wear out
  • d)
    run over
  • e)
    take away
Correct answer is option 'A'. Can you explain this answer?

Muskaan reddy answered
It is not easy for many civil servants to "get by" on their salaries as the inflation rate is extremely high.
"Get by" means to manage or cope with a situation, especially when it is difficult.

He ____ technical support when his computer broke down because he doesn't know much about computers.
  • a)
    must have had
  • b)
    needn't have had
  • c)
    can't have had
  • d)
    didn't have to have
  • e)
    shouldn't have had
Correct answer is option 'A'. Can you explain this answer?

Ajay rane answered
Understanding the Correct Answer: "must have had"
The sentence in question is:
"He ____ technical support when his computer broke down because he doesn't know much about computers."
The correct answer is option 'A': "must have had." Let's break down why this is the right choice.
Meaning of "must have had"
- This phrase indicates a strong assumption about a past event.
- In this context, it suggests that since the person lacks knowledge about computers, it is highly likely that he sought help.
Contextual Analysis
- The phrase "when his computer broke down" implies a specific scenario.
- Given his limited knowledge about computers, it is reasonable to conclude that he would need assistance.
Why Other Options Are Incorrect
- b) needn't have had: This implies that he didn't need support, which contradicts the context.
- c) can't have had: This suggests that it was impossible for him to have had support, which is not the case.
- d) didn't have to have: This implies he had a choice about support, which doesn't align with the scenario of a computer breakdown.
- e) shouldn't have had: This indicates a judgment that he was wrong in seeking help, which is not the intent of the sentence.
Conclusion
- The phrase "must have had" effectively conveys that, due to his lack of technical knowledge, it is logical to conclude that he sought technical support during his computer issues. Thus, option 'A' is the most appropriate choice for the sentence.

Apple Computers ____ the share of the market held by Microsoft in the late 1990s but unfortunately they didn't have a clear business plan to more ambitiously pursue their business goals.
  • a)
    could capture
  • b)
    needn't have captured
  • c)
    should capture
  • d)
    might have captured
  • e)
    might capture
Correct answer is option 'D'. Can you explain this answer?

Ravi dey answered
Understanding the Correct Answer: "might have captured"
The sentence discusses Apple's potential in relation to Microsoft's market share during the late 1990s. The correct answer, "might have captured," indicates a possibility that was not realized. Here’s a breakdown of why this option fits best:
1. Implication of Possibility
- The phrase "might have" suggests that there was a chance or opportunity for Apple to capture market share.
- It conveys a sense of hypothetical outcomes, reflecting on what could have occurred if circumstances were different.
2. Contextual Fit
- The sentence notes that Apple did not have a clear business plan, which implies that although they had the potential ("might have"), they ultimately did not act on it.
- This aligns with the historical context where Apple struggled against Microsoft despite having innovative products.
3. Comparison with Other Options
- "could capture": Indicates present ability, not past potential.
- "needn't have captured": Suggests it was unnecessary, which is not the case here.
- "should captured": Incorrect grammatical structure (should have captured).
- "might capture": Indicates future potential, not a reflection on the past.
Conclusion
- The option "might have captured" accurately encapsulates the idea of Apple having the potential to take market share in a past scenario that did not materialize. This reflects both the opportunity and the lack of execution due to a missing business plan.

Scientists have found that people who are active at a moderate level experience a long list of health benefits and that physical activity ____ vigorous.
  • a)
    has to be
  • b)
    is not used to being
  • c)
    must be
  • d)
    had better be
  • e)
    needn't be
Correct answer is option 'E'. Can you explain this answer?

Edgy Education answered
Explanation:
The correct answer is E: needn't be.


  • This question is testing the understanding of the relationship between moderate physical activity and vigorous physical activity.

  • The sentence states that people who are active at a moderate level experience a long list of health benefits.

  • This means that moderate physical activity alone is sufficient to provide these health benefits.

  • Therefore, it is not necessary for physical activity to be vigorous in order to experience these health benefits.

  • "Needn't be" means that something is not necessary, which aligns with the meaning of the sentence.


In summary, the correct answer is E: needn't be, as it accurately reflects the relationship between moderate physical activity and vigorous physical activity in the context of the sentence.

If you want to get a good night's sleep, you ____ any tea or coffee in the evenings.
  • a)
    would rather drink
  • b)
    don't have to drink
  • c)
    mustn't drink
  • d)
    were able to drink
  • e)
    could drink
Correct answer is option 'C'. Can you explain this answer?


To answer this question correctly, we need to understand the meaning of each option and choose the most suitable one.
Option A: would rather drink
- This phrase indicates a preference or choice, but it doesn't convey the necessity or requirement mentioned in the question.
Option B: don't have to drink
- This phrase implies that there is no obligation or need to drink tea or coffee, which contradicts the question's statement that it is necessary to avoid them.
Option C: mustn't drink
- This phrase expresses a prohibition or strong recommendation against drinking tea or coffee in the evenings, aligning with the question's requirement for a good night's sleep.
Option D: were able to drink
- This phrase suggests the ability or possibility to drink tea or coffee, but it doesn't address the necessity or recommendation mentioned in the question.
Option E: could drink
- This phrase implies the ability or opportunity to drink tea or coffee, but it doesn't address the necessity or recommendation mentioned in the question.
Therefore, the correct answer is C: mustn't drink as it accurately reflects the requirement to avoid tea or coffee in the evenings for a good night's sleep.

I ____ an office but I chose to work from home because everything I need is here.
  • a)
    could have rented
  • b)
    must have rented
  • c)
    may rent
  • d)
    might rent
  • e)
    needn't have rented
Correct answer is option 'A'. Can you explain this answer?

Freak Artworks answered

To solve this sentence completion exercise, we need to choose the correct verb form that fits the context of the sentence. Let's analyze each option:
A:
could have rented

This option is the correct answer. It implies that the speaker had the possibility to rent an office, but they chose not to because they have everything they need at home.
B:
must have rented

This option implies certainty that the speaker rented an office. However, the sentence suggests that the speaker chose not to rent an office.
C:
may rent

This option indicates that there is a possibility that the speaker will rent an office in the future. However, the sentence states that the speaker chose not to rent an office.
D:
might rent

This option suggests a possibility of renting an office, but it does not convey the sense of the speaker's decision to work from home.
E:
needn't have rented

This option implies that the speaker rented an office but it was unnecessary. However, the sentence clearly states that the speaker chose not to rent an office.
In conclusion, option A "could have rented" is the most appropriate choice as it reflects the speaker's decision not to rent an office despite the possibility to do so.

Climbers survive in this so-called death zone above eight thousand meters because they spend several months climbing to higher points on the mountain to ____ in those conditions.
  • a)
    used to live
  • b)
    have to live
  • c)
    would rather live
  • d)
    get used to living
  • e)
    had better live
Correct answer is option 'D'. Can you explain this answer?

Freak Artworks answered

To survive in the death zone above eight thousand meters, climbers need to spend several months climbing to higher points on the mountain to get used to living in those conditions. The correct answer is option D.
Here's a detailed explanation:
- Death zone: The death zone refers to altitudes above eight thousand meters where the oxygen level is extremely low, making it very difficult for climbers to survive.
- Climbing to higher points: Climbers spend several months gradually ascending to higher points on the mountain to acclimatize their bodies to the low oxygen levels and harsh conditions.
- Getting used to living: By spending time at higher altitudes, climbers gradually adapt to the extreme conditions of the death zone, allowing their bodies to adjust and function better with limited oxygen.
- Survival: The process of acclimatization enables climbers to survive in the death zone as their bodies become accustomed to the low oxygen levels, reducing the risk of altitude sickness and other life-threatening conditions.
In conclusion, climbers survive in the death zone above eight thousand meters by spending several months climbing to higher points on the mountain to get used to living in those conditions. This allows their bodies to adapt and function better in the extreme environment.

The new steam powered and mechanized farm equipment ____ the work easier but they couldn't get it to work.
  • a)
    was able to make
  • b)
    can't have made
  • c)
    didn't have to make
  • d)
    might have made
  • e)
    had better make
Correct answer is option 'D'. Can you explain this answer?

Yashina Kapoor answered

The correct answer is D: might have made.
Explanation:
The sentence states that the new steam-powered and mechanized farm equipment made the work easier, but they couldn't get it to work. Here, we are discussing a hypothetical situation where the equipment could have made the work easier, but it didn't. To convey this meaning, we need to use a conditional phrase in the past tense.
Let's analyze the given options:
A: was able to make - This option is grammatically incorrect as it uses the simple past tense ("was") instead of the conditional phrase.
B: can't have made - This option uses the present tense ("can't") instead of the conditional phrase, making it grammatically incorrect.
C: didn't have to make - This option suggests that there was no need to make the equipment, which is not what the sentence implies. It is grammatically incorrect as it doesn't convey the intended meaning.
D: might have made - This option uses the conditional phrase ("might have") in the past tense, which accurately conveys the hypothetical situation where the equipment could have made the work easier. This is the correct answer.
E: had better make - This option implies a suggestion or advice, which is not suitable in the context of the sentence. It is grammatically incorrect and doesn't convey the intended meaning.
Therefore, the correct answer is D: might have made.

Martin ____ my tennis racket without asking my permission. I got really angry with him.
  • a)
    needn't have taken
  • b)
    must not have taken
  • c)
    shouldn't have taken
  • d)
    didn't need to taken
  • e)
    might not have taken
Correct answer is option 'C'. Can you explain this answer?

Sara singh answered
Explanation:
The correct answer is option C: shouldn't have taken.

Explanation:
To understand why option C is correct, let's review the meaning and usage of the different options:

a) needn't have taken: This means that it was not necessary for Martin to take the tennis racket. However, this does not align with the fact that the speaker got angry, indicating that Martin did take the racket.

b) must not have taken: This implies that Martin was not allowed to take the tennis racket. While it is a possibility, it does not explain why the speaker got angry.

c) shouldn't have taken: This option correctly expresses the speaker's anger and implies that Martin was not supposed to take the tennis racket without permission. It suggests that Martin made a mistake by taking it.

d) didn't need to take: This option suggests that Martin had no reason or obligation to take the tennis racket. However, it does not explain the speaker's anger.

e) might not have taken: This option suggests that Martin possibly did not take the tennis racket. However, since the speaker got angry, it implies that Martin did take it.

In conclusion:
Option C, "shouldn't have taken," is the correct answer. It accurately reflects the speaker's anger and implies that Martin made a mistake by taking the tennis racket without permission.

Fortunately, I ____ working alone otherwise I would have got really bored at the night shift.
  • a)
    was supposed to
  • b)
    was to
  • c)
    was used to
  • d)
    would
  • e)
    used to
Correct answer is option 'C'. Can you explain this answer?

Harsh mehra answered
Explanation:

The correct answer is option 'C' - "was used to".

Context:
The speaker is discussing their experience of working alone during the night shift. They are expressing their gratitude for being able to work alone because otherwise, they would have felt really bored.

Explanation:
In this context, the phrase "was used to" is the most appropriate choice. Here's why:

1. Meaning:
- "Was used to" is a verb phrase that indicates a habit or a state of being familiar with something.
- It suggests that the speaker had developed a level of comfort or familiarity with working alone during night shifts.

2. Past Tense:
- The usage of "was" indicates that the statement is in the past tense.
- Since the speaker is referring to a specific period in the past (the night shift), it is appropriate to use the past tense.

3. Contrast with Other Options:
- Option 'A' - "was supposed to" implies an expectation or obligation, which doesn't fit the context. The speaker is not discussing what they were supposed to do, but rather expressing their satisfaction with their current situation.
- Option 'B' - "was to" is not grammatically correct in this context. It lacks the necessary verb or verb phrase to complete the sentence.
- Option 'D' - "would" is a conditional verb indicating a hypothetical situation, but it doesn't convey the intended meaning of being familiar with working alone during night shifts.
- Option 'E' - "used to" is a valid choice, but "was used to" is more appropriate grammatically as it matches the past tense used in the sentence.

Conclusion:
Considering the meaning, past tense, and the contrast with other options, the correct answer is option 'C' - "was used to". It accurately conveys the speaker's familiarity and comfort with working alone during the night shift.

A new report suggests that a vaccine that offers at least partial protection against HIV ____ available in the near future.
  • a)
    had to be
  • b)
    could be
  • c)
    used to be
  • d)
    might have been
  • e)
    would rather be
Correct answer is option 'B'. Can you explain this answer?

Yashina Kapoor answered
Answer:

The correct answer is B:
could be
.
Explanation:
- The sentence talks about a future possibility, indicating that the vaccine is not currently available.
- The phrase "at least partial protection against HIV" suggests that the vaccine may not offer complete protection, but it can provide some level of defense against the virus.
- The word "could" implies a potential outcome or possibility, which aligns with the idea that the vaccine may become available in the future.
- The other options are not suitable in this context:
- "Had to be" suggests a requirement or necessity, which is not stated or implied in the sentence.
- "Used to be" indicates that the vaccine was available in the past but is no longer the case, which contradicts the idea of a future possibility.
- "Might have been" implies that something was possible in the past but did not occur, which does not fit the context of a potential future vaccine.
- "Would rather be" expresses a preference, which is not relevant to the discussion of a vaccine's availability.

Many immigrants now agree that they ____ their traditions when they first settled in America.
  • a)
    shouldn't have given up
  • b)
    don't have to give up
  • c)
    may not have given up
  • d)
    might not give up
  • e)
    needn't give up
Correct answer is option 'A'. Can you explain this answer?

Freak Artworks answered

The correct answer is option A: shouldn't have given up. Here is the detailed explanation:
- The sentence is talking about the actions of immigrants when they first settled in America.
- The word "now" suggests that the sentence is referring to the present time.
- The word "agree" implies that the immigrants have a consensus or shared belief.
- The word "their" indicates that the immigrants are referring to their own traditions or cultural practices.
- The phrase "given up" means abandoning or relinquishing something.
- Option A: shouldn't have given up is the correct choice because it expresses the idea that the immigrants regret giving up their traditions when they first settled in America.
To summarize:
- Immigrants regret abandoning their traditions when they first settled in America.
- This regret is shared among many immigrants in the present time.
- The correct answer is option A: shouldn't have given up.

I don't know why she didn't ask me how to do it as I ____ her.
  • a)
    must have helped
  • b)
    could have helped
  • c)
    might help
  • d)
    should have helped
  • e)
    could help
Correct answer is option 'B'. Can you explain this answer?

Nitin naidu answered
Understanding the Correct Answer
In the sentence "I don't know why she didn't ask me how to do it as I ____ her," the correct completion is "could have helped." Let's break down why option B is the most appropriate choice.
Meaning of "Could Have Helped"
- "Could have helped" suggests a past ability or potential action that was not taken.
- This phrase implies that the speaker had the capacity to assist but was not given the opportunity.
Contextual Clarity
- The context indicates a missed opportunity. The speaker is reflecting on why someone did not ask for help.
- If the speaker "could have helped," it means they were capable and available to provide assistance, but it did not happen.
Analysis of Other Options
- a) Must have helped: This indicates certainty that help was given in the past, which contradicts the context.
- c) Might help: This suggests a possibility in the present or future, not fitting the past context.
- d) Should have helped: This implies a moral obligation that was not fulfilled, which is not the focus here.
- e) Could help: This indicates present ability, which does not align with the past situation being discussed.
Conclusion
In summary, "could have helped" effectively conveys the idea that assistance was possible but not utilized. This aligns with the reflective tone of the sentence, making it the best choice.

You ____ the locksmith to open the door for you last night before you tried to open the door yourself.
  • a)
    must call
  • b)
    ought to have called
  • c)
    have had to call
  • d)
    could call
  • e)
    had better call
Correct answer is option 'B'. Can you explain this answer?

Yashina Kapoor answered

To determine the correct answer, let's analyze the sentence:
"You ____ the locksmith to open the door for you last night before you tried to open the door yourself."
The sentence implies that the speaker attempted to open the door themselves after a certain action was taken. We need to choose the option that correctly fills in the blank.
Option A: must call
- This option suggests a strong obligation or necessity, which is not necessary in this context.
Option B: ought to have called
- This option implies that it would have been advisable or recommended to call the locksmith before trying to open the door. It indicates that the speaker did not call the locksmith but should have done so.
Option C: have had to call
- This option implies that the speaker was required to call the locksmith, which does not fit the context of the sentence.
Option D: could call
- This option suggests the ability or possibility to call the locksmith, but it does not convey the idea that it was advisable or recommended.
Option E: had better call
- This option implies a strong suggestion or warning, but it does not fit the context of the sentence.
Considering the meaning and context of the sentence, Option B: ought to have called is the most suitable choice. It indicates that it would have been advisable or recommended to call the locksmith before attempting to open the door.

The prisoner ____ this way; there are no footprints at all.
  • a)
    may have escaped
  • b)
    needn't have escaped
  • c)
    could have escaped
  • d)
    had to escape
  • e)
    can't have escaped
Correct answer is option 'E'. Can you explain this answer?

Yashina Kapoor answered

The correct answer is E:
can't have escaped
. Here's the detailed explanation:
- The sentence implies that there are no footprints at all, indicating that the prisoner did not leave any evidence of escaping.
- We need to determine the most appropriate modal verb to fill in the blank.
- Let's analyze the given options:
A:
may have escaped
- This suggests that there is a possibility that the prisoner escaped, but it does not explain why there are no footprints at all. It is not the best fit.
B:
needn't have escaped
- This implies that it was not necessary for the prisoner to escape, but it does not address the absence of footprints. It is not the correct choice.
C:
could have escaped
- This suggests that the prisoner had the ability or opportunity to escape, but it does not explain the lack of footprints. It is not the correct option.
D:
had to escape
- This implies that the prisoner was compelled or forced to escape, but it does not explain why there are no footprints. It is not the appropriate choice.
E:
can't have escaped
- This indicates that it is not possible for the prisoner to have escaped because there are no footprints. The absence of footprints is evidence that supports this option, making it the correct answer.
In summary, the most suitable modal verb to fill in the blank is "can't have escaped" because it aligns with the absence of footprints as evidence.

I don't think it was a good idea to intervene, instead, you ____ your child to abandon the habit of thumb-sucking gradually, all by himself.
  • a)
    have allowed
  • b)
    had allowed
  • c)
    must have allowed
  • d)
    were able to allow
  • e)
    could have allowed
Correct answer is option 'E'. Can you explain this answer?

Explanation:

Intervention is not always the best solution for a child's habit. The child should be allowed to abandon the habit gradually, all by himself. The correct answer is option 'E' which is explained below:

Could have allowed

- The phrase "could have allowed" indicates a possibility that the parent could have allowed the child to abandon the habit of thumb-sucking gradually.
- This option suggests that the parent could have provided a supportive environment for the child to abandon the habit on his own.
- It is important to note that this option does not imply that the parent should have "allowed" the child to continue the habit. Instead, it suggests that the parent could have taken a more hands-off approach and allowed the child to naturally outgrow the habit.

Other options:

Have allowed, had allowed, must have allowed, were able to allow

- These options are not suitable in this context as they do not convey the same meaning as "could have allowed".
- "Have allowed" and "had allowed" indicate that the parent has already given permission for the child to abandon the habit.
- "Must have allowed" implies that the parent had no other choice but to allow the child to abandon the habit.
- "Were able to allow" implies that the parent had the ability to allow the child to abandon the habit, but it does not suggest that it was the best course of action.

Conclusion:

Parents need to be patient and provide a supportive environment for their child to abandon the habit of thumb-sucking gradually. They should not intervene unless the habit is causing harm to the child. The correct answer is option 'E', which suggests that the parent could have allowed the child to naturally outgrow the habit.

I don't know why Peter is so late; do you think he ____ lost coming here?
  • a)
    may get
  • b)
    could get
  • c)
    must have got
  • d)
    might have got
  • e)
    was to have got
Correct answer is option 'D'. Can you explain this answer?

Arti nair answered
The correct answer is option 'D' - might have got.

Explanation:
To understand the correct answer, let's examine the given sentence: "I don't know why Peter is so late; do you think he ____ lost coming here?"

The sentence indicates that the speaker is unsure about the reason for Peter's lateness and is seeking the listener's opinion or speculation.

In this context, the use of "might have got" is appropriate because it expresses a possibility or speculation about Peter's situation. Here's why the other options are not the best fit:

a) may get: The verb "get" indicates an action in the present or future tense, but the sentence is referring to Peter's lateness, which is in the past. So, "may get" is not suitable in this context.

b) could get: Similar to option 'a', "could get" also refers to a present or future action. It doesn't convey the idea of Peter being lost in the past.

c) must have got: "Must have got" implies certainty or a strong belief about something that happened in the past. However, the speaker explicitly states that they don't know the reason for Peter's lateness, so using "must have got" would be contradictory.

e) was to have got: This option suggests an obligation or plan to arrive at a certain time. However, it doesn't fit the context of Peter being lost, as it focuses on the intended arrival time rather than the reason for his lateness.

In conclusion, the most appropriate option is 'D' - might have got, as it conveys the idea of possibility or speculation about Peter getting lost on his way to the current location.

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