Only when he had done it that he had made a mistake.A. he then realizedB. did he realizeC

发布时间：2020-08-16 17:11:47

Only when he had done it      that he had made a mistake.
A. he then realized
B. did he realize
C. before
D. he realized

网友回答

A. he then realized
(答案→)B. did he realize
C. before
D. he realized
解析： 考查倒装，only + 状语开头句子采用倒装。 句意：只有当他做了那件事后他才意识到他犯错误了。
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