—Such a mistake could have been avoided. —Unfortunately, he _______ the mistake again

—Such a mistake could have been avoided.

—Unfortunately, he _______ the mistake again and again.

A.repeated                          B. would repeat

C.had repeated                          D. would have repeated

答案

.A


解析:

由could have been avoided(本来可以避免)可知双方在谈论过去的事。故选A

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