They ___ the room when the teacher entered. MCQ with Answer and Explanation

They ___ the room when the teacher entered.

A. have cleaned

B. cleaned

C. were cleaning

D. clean

Answer: Option C

Past Continuous at a past moment.

This question belongs to: English Tenses

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Question #1 Report Error

We ___ for the train for an hour before it arrived.

A. were waiting

B. have been waiting

C. waited

D. had been waiting

Correct Answer: Option D

Explanation:
Duration before arrival → Past Perfect Continuous.

This question belongs to: English Tenses

Question #2 Report Error

He ___ on the report when I saw him.

A. was working

B. has worked

C. worked

D. works

Correct Answer: Option A

Explanation:
Past Continuous.

This question belongs to: English Tenses

Question #3 Report Error

Look at the clouds! It ___.

A. is going to rain

B. rained

C. will rain

D. rains

Correct Answer: Option A

Explanation:
Prediction based on present evidence → 'is going to'.

This question belongs to: English Tenses