You ___ not touch the thermostat. MCQ with Answer and Explanation

You ___ not touch the thermostat.

A. must

B. may

C. can

D. need

Answer: Option A

'Must not' rule.

This question belongs to: English Modals

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Question #1 Report Error

She ___ be at the library; she studies there often.

A. will

B. must

C. might

D. should

Correct Answer: Option C

Explanation:
'Might' for weak possibility.

This question belongs to: English Modals

Question #2 Report Error

You ___ to have informed me earlier.

A. ought

B. need

C. must

D. should

Correct Answer: Option A

Explanation:
'Ought to have' expresses unfulfilled past obligation.

This question belongs to: English Modals

Question #3 Report Error

You ___ eat more vegetables for better health.

A. may

B. can

C. should

D. must

Correct Answer: Option C

Explanation:
'Should' advice.

This question belongs to: English Modals