I all the exercises before our teacher collected the exercise books. A. have finished B. finished C. had finished D. finish 查看更多

 

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          all the exercises before our teacher collected the exercise books.
[     ]
A. have finished
B. finished
C. had finished
D. finish

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I _________all the exercises before our teacher collected the exercise books.

A.have finished          B.finished            C.had finished              D.finish

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