She ___ a teacher since 2010. MCQ with Answer and Explanation

She ___ a teacher since 2010.

A. was

B. is

C. had been

D. has been

Answer: Option D

Present Perfect with 'since' for a state continuing.

This question belongs to: English Tenses

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Question #1 Report Error

She ___ her first novel by the time she was 25.

A. has written

B. had written

C. writes

D. was writing

Correct Answer: Option B

Explanation:
Past Perfect to show completion before a past age.

This question belongs to: English Tenses

Question #2 Report Error

By next month, she ___ here for a year.

A. works

B. will have been working

C. has worked

D. will work

Correct Answer: Option B

Explanation:
Duration up to future point → Future Perfect Continuous.

This question belongs to: English Tenses

Question #3 Report Error

I ___ a lot of work today and I'm exhausted.

A. had done

B. was doing

C. did

D. have done

Correct Answer: Option D

Explanation:
Today unfinished → Present Perfect.

This question belongs to: English Tenses