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Their answers are exactly the same. One of them from the other. A. must copy B.

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Their answers are exactly the same. One of them from the other. A. must copy B.

Their answers are exactly the same. One of them ___from the other.

A. must copy     B. must havecopied C. should copy  D. should have copied

 

试题答案

【答案】

B

【解析】

试题