All questions of Modals for Class 9 Exam

"Should" implies advisability or recommendation, suggesting restarting the computer as a potential solution.

Understanding the Modal Verb "Must"
The correct choice for completing the sentence "You _____________ turn off the lights before leaving the room" is "must." This modal verb indicates necessity or obligation. Here’s why "must" is the appropriate option:
1. Indication of Obligation
- The use of "must" expresses a strong requirement.
- In this context, turning off the lights is essential to prevent waste of electricity and ensure safety.
2. Contrast with Other Modals
- Will: Suggests future intent but does not convey obligation.
- E.g., "You will turn off the lights" implies willingness, not necessity.
- Might: Indicates possibility, not obligation.
- E.g., "You might turn off the lights" suggests uncertainty about the action.
- Would: Often used for hypothetical situations or polite requests.
- E.g., "You would turn off the lights if you remembered" implies a condition rather than a requirement.
3. Contextual Importance
- In practical scenarios, turning off lights when leaving is a common rule in homes and offices.
- Using "must" conveys that this action is not just advisable but required to promote responsibility.
Conclusion
- Therefore, in the sentence provided, "must" effectively communicates the necessity of turning off the lights before exiting the room. It emphasizes the importance of following this rule for both environmental and safety reasons.

"Must" indicates necessity or obligation, emphasizing the requirement to submit assignments on time.

"Must" expresses necessity or obligation, indicating that finishing homework is required before playing.

Understanding the Correct Modal: "Must"
In the sentence "She ________ be at the meeting by now, as it started an hour ago," the correct modal is "must." Here’s why:
Indication of Certainty
- The word "must" is used to express a strong belief or certainty about something.
- In this context, since the meeting has already started an hour ago, it is highly likely that she is already at the meeting.
Context of Time
- The phrase "it started an hour ago" provides a time reference that reinforces the necessity of her presence.
- Given that meetings usually require attendees to be present at the start, it follows logically that she should be there.
Comparison with Other Modals
- Might: This suggests possibility but lacks the certainty needed in this context. Saying she "might be" does not align with the information provided.
- Shall: This is generally used in the first person or to express future actions, which does not fit here.
- Would: This modal often indicates a conditional situation, which is not applicable as we are discussing the current state of affairs.
Conclusion
In summary, "must" conveys the necessary certainty that she is at the meeting by now, making it the most appropriate choice in this scenario.

"Must" suggests a necessity or strong recommendation, advising to see a doctor if symptoms persist.

"Might" expresses possibility, indicating that she may or may not attend depending on her health.

"Must" indicates a strong likelihood based on the presence of his car.

"Can" suggests ability or permission, indicating it's a good idea to call ahead.

"Should" indicates expectation or advisability, suggesting that you probably took the wrong train.

"Can" suggests ability or permission, indicating that she has the capability to call her parents.

"Must" implies a strong possibility, based on the scheduled flight arrival time.

In this context, "could like to" suggests possibility or capability, fitting the meaning of Sammy offering suggestions.

"Must" here expresses a strong likelihood based on logical deduction.

"Should" suggests advisability or recommendation, indicating a need for greater care with belongings.

"Should" expresses advisability or recommendation, emphasizing the importance of regular study for exam success.

"Could" indicates possibility, suggesting that they may not have known due to being on vacation.

"Should" indicates advisability or recommendation, suggesting caution while driving in such conditions.

"Could" indicates possibility, suggesting that they may not have heard the news due to traveling.

"Should" implies advisability or recommendation, suggesting checking email regularly for updates.