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By the end of last month, I _____ all the CDs of Justin Bieber.
A. collect B. collected C. have collected D. had collected
查看习题详情和答案>>— Could I clean the bedroom for you?
— No, thanks. I it myself.
A. cleaned B. have cleaned C. was cleaning D. had cleaned
查看习题详情和答案>>— Are you going to the bank, Laura?
—No, I _______ to the bank already.
A. have been B. have gone C. am going D. had been
查看习题详情和答案>>-How nice your bike is! How long _________ you ______________ it?
-For two weeks.
A. have; bought B. have; had C. did; buy
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