By the time he realizes the mistake he ，it will be too late for him to do anything about i

发布时间：2020-08-16 16:35:07

By the time he realizes the mistake he     ，it will be too late for him to do anything about it.
A. has made
B. made
C. makes
D. will make

网友回答

(答案→)A. has made
B. made
C. makes
D. will make
解析：考查时态by + 现在的时间，主句用现在完成时。
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