Grammar Quiz

[ Tenses ]

Past Perfect Continuous Tense

How long _______ before they finally finished the project?

A. did they work on it

B. had they been working on it

C. have they been working on it

D. were they working on it

Select your answer:
         


Random Topics:

IF CLAUSESentencesGrammar - Place and MovementVerb and PrepositionEnglish MorphosyntaxSentence TypesModal AuxiliarySuffixes and TensesIn/On/At + Time

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