[ Grammar ]
I ___________ (wait) for her for hours before she came.
A. had been waiting
B. has been waiting
C. had been waited
D. had waited

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I practice swimmimg twice a week.
_
A. When do you practice swimming?
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I ____ doing something important right now, but I ____ have a chat with you in a few minutes.
A. was … will
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A. Team
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She borrowed the books from us. They are ______________.
A. his
B. hers
C. ours
D. mine