Grammar Quiz
[ Tenses ]

They __________ this research for years.

A. have done

B. have been doing

C. were doing

Select your answer:
A  B  C  D  E 


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Other quiz:

Grammar › View

My dog _______ have to study

A. doesn’t

B. don’t

Modal Verb › View

During the exam, you _______ talk.

A. can’t

B. mustn’t

C. don’t have to

D. may not

IF CLAUSE › View

If you get back late, I………………. angry.

A. be

B. will be

C. will am

D. is

Tenses › View

What is the structure of the present continuous tense?

A. Subject + will be + verb-ing

B. Subject + have/has + verb-ed

C. Subject + was/were + verb-ing

D. Subject + am/is/are + verb-ing

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