[ 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.
Select your answer:
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Grammar › ViewMy mother always _____ the truth
A. is telling
B. told
C. tells
Modal Verbs › View
I want to go out with you , but I … finish my homework first.
A. must
B. have to
C. should