I ___ not find my phone this morning. MCQ with Answer and Explanation

I ___ not find my phone this morning.

A. may

B. can

C. could

D. should

Answer: Option C

'Could not' past inability.

This question belongs to: English Modals

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Question #1 Report Error

You ___ not eat in the laboratory.

A. may

B. need

C. can

D. must

Correct Answer: Option D

Explanation:
'Must not' safety rule.

This question belongs to: English Modals

Question #2 Report Error

He ___ speak three languages by the time he was ten.

A. might

B. can

C. could

D. may

Correct Answer: Option C

Explanation:
'Could' past ability.

This question belongs to: English Modals

Question #3 Report Error

He ___ not lift that heavy box because of his back.

A. must

B. can

C. may

D. should

Correct Answer: Option B

Explanation:
'Cannot' indicates inability due to physical limitation.

This question belongs to: English Modals