[ 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:
Vocabulary › ViewThe set of whole numbers and their opposites
A. Integers
B. Algebraic Expression
C. Coefficient
D. Constant
E. Distributive Property
Passive Voice of Tenses › View
Active: He has called the police.
A. Passive: The police hasn’t been called.
B. Passive: The police has been called.
C. Passive: The police has being called.
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
