He made a mistake，but he corrected the situation it went worseA. untilB. whenC. beforeD.

发布时间：2020-08-16 22:15:22

He made a mistake，but he corrected the situation      it went worse．
A. until
B. when
C. before
D. as

网友回答

A. until
B. when
(答案→)C. before
D. as
解析：考查before用法。结合句意可知C正确。句意：他犯了一个严重的错误。但是在情况变糟之前，他改正了错误。
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