Test: Modal Verb- 3 - Class 1 MCQ

Explanation:
The correct answer is C: doesn't it.
- The sentence is in the form of a statement, so we need to use a tag question to make it a question.
- The tag question should have the opposite polarity of the main clause, which is positive.
- The main clause states that Trafalgar Square offers some of the most famous views in the country.
- To create the tag question, we need to use the auxiliary verb "does" in the negative form, which is "doesn't" for the third person singular subject "Trafalgar Square."
- The correct tag question is "doesn't it" because we are referring to Trafalgar Square as "it."
Therefore, the correct completion of the sentence is "Trafalgar Square offers some of the most famous views in the country, doesn't it?"

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.

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.

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.

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.

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.

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.

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.

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.

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.