You ___ not enter the room without knocking. MCQ with Answer and Explanation

You ___ not enter the room without knocking.

A. can

B. need

C. must

D. may

Answer: Option C

'Must not' etiquette.

This question belongs to: English Modals

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Question #1 Report Error

We ___ not disturb the peace.

A. must

B. may

C. should

D. can

Correct Answer: Option A

Explanation:
'Must not' obligation.

This question belongs to: English Modals

Question #2 Report Error

He ___ be a doctor; he knows so much about medicine.

A. shall

B. can

C. must

D. may

Correct Answer: Option C

Explanation:
'Must' deduction.

This question belongs to: English Modals

Question #3 Report Error

You ___ not leave your car unlocked.

A. should

B. may

C. can

D. must

Correct Answer: Option A

Explanation:
'Should not' advice.

This question belongs to: English Modals