[ Tenses ]
Identify the sentence that correctly uses the present perfect continuous tense.
A. She has been studying since three hours.
B. She has studying for three hours.
C. She has been studying for three hours.
D. She has study for three hours.

Random Topics:
Adverbs and PhrasesPast Tense & Past Continuous TenseContinuous TensesPersonal PronounsPast TensesGrammar SuffixesVerb-ing or to VerbClauses of ReasonArticles with Proper NounsExclamationOther quiz:
Grammar › ViewA : What time is it ? (09.15)B : It is …..
A. Half past nine
B. Fifteen nine
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D. Quarter past nine
Modals › View
My car keys are possibly in the kitchen.
A. My car keys might be in the kitchen.
B. I don’t know whether my car keys are in the kitchen.
C. My car keys cannot be in the kitchen.
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Articles › ViewWe’ll go___ home after class.
A. a
B. an
C. the
D. no article
Grammar › View
___ Bob and Kate.
A. This is
B. Those are
C. That is
