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When the education system of China and Japan, the professor made no answer. A. b

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When the education system of China and Japan, the professor made no answer. A. b

When________ the education system of China and Japan, the professor made no answer.

A.being asked to compare  B.asking him to compare

C.asked to compare   D.asked him to compare

 

试题答案

答案:C

提示:

教授是被问了一个问题,ask与主句主语the professor具有逻辑上的动宾关系,所以用过去分词形式。