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 


Random Topics:

Passive SentenceSynonymSentence Structure and Verb TensesVerbs & AdverbsDefinite ArticlesCompliment, Congratulation, and HopeGrammar - could / could notPresent Simple for Future ArrangementComparison & Modal Verbs in Passive VoiceGrammar (Adjectives)

Other quiz:

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

➤