All reference books ________, he didn't find the key to the question.A.being searchedB.searche

题目简介

All reference books ________, he didn't find the key to the question.A.being searchedB.searche

题目详情

All reference books ________, he didn't find the key to the question.
A.being searchedB.searched
C.to be searchedD.were searched
题型:单选题难度:中档来源:不详

答案

B
B考察非谓语动词。句义:所有的参考书都查遍了,他还是没有找到问题的答案。该句中的,reference books与search之间构成被动关系,而且表示动作已经完成,使用过去分词做状语。故B正确。

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