Before the problem can be solved，it must be obvious the problem itself is.(2011·湖南，31)A.

发布时间：2020-08-17 09:21:39

Before the problem can be solved，it must be obvious      the problem itself is.(2011·湖南，31)
A. what
B. that
C. which
D. why

网友回答

(答案→)A. what
B. that
C. which
D. why
解析：句意：在解决问题之前必须弄清楚问题本身是什么。what引导主语从句，并在主语从句中充当表语。注：句中的it是形式主语。
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