The reform has changed the whole nation. It cannot remain it used to be.A. what B. whereC

发布时间：2020-08-17 10:03:26

The reform has changed the whole nation. It cannot remain      it used to be.
A. what
B. where
C. which
D. when

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(答案→)A. what
B. where
C. which
D. when
解析：A 考察表语从句。此处remain是一个联系动词，其后选用what引导一个表语从句，同时what在从句中作为be的表语。
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