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. The reason for all the changes being made to us yet. A. has not explained B. h

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. The reason for all the changes being made to us yet. A. has not explained B. h

 

. The reason for all the changes being made_______to us yet.

A. has notexplained         B.has not been explained

C. did notexplained         D.were not explained

 

试题答案

【答案】

B

【解析】