I ___ not unlock the door; the key broke. MCQ with Answer and Explanation

I ___ not unlock the door; the key broke.
A. may
B. could
C. should
D. can
Answer: Option B
Solution (By JKSSB Mock Tests)
'Could not' past inability.

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Practice More Modals Questions

Question #1
You ___ have seen his face; it was priceless.
A. must
B. could
C. would
D. should

Correct Answer: Option D


Explanation:
'Should have seen' indicates a missed enjoyable sight.

This question belongs to: English Modals
Question #2
He ___ have been scared; he was trembling.
A. would
B. could
C. should
D. must

Correct Answer: Option D


Explanation:
'Must have' deduction.

This question belongs to: English Modals
Question #3
You ___ not say mean things.
A. can
B. should
C. may
D. must

Correct Answer: Option B


Explanation:
'Should not' moral advice.

This question belongs to: English Modals