He ___ in the library for three hours when the fire alarm went off. MCQ with Answer and Explanation

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He ___ in the library for three hours when the fire alarm went off.

A. studied

B. had been studying

C. has been studying

D. was studying

Answer: Option B

Solution (By JKSSB Mock Tests)

Duration before a past interruption → Past Perfect Continuous.

This question belongs to: English Tenses

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Practice More Tenses Questions

Question #1

If I were a bird, I ___ to you.

A. fly

B. flew

C. would fly

D. will fly

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Correct Answer: Option C

Explanation:
Second conditional.

This question belongs to: English Tenses

Question #2

She ___ the room before the guests entered.

A. was cleaning

B. has cleaned

C. had cleaned

D. cleaned

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Correct Answer: Option C

Explanation:
Earlier cleaning.

This question belongs to: English Tenses

Question #3

She ___ the work by the time the manager arrived.

A. was completing

B. completed

C. has completed

D. had completed

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Correct Answer: Option D

Explanation:
Earlier completion → Past Perfect.

This question belongs to: English Tenses

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