Only when he failed the exam that he didn’t work hard. (原创)A. he regrettedB. did he regre

发布时间:2020-08-16 12:12:15

Only when he failed the exam      that he didn’t work hard. (原创)
A. he regretted
B. did he regret
C. had he regretted
D. does he regret

网友回答

A. he regretted
(答案→)B. did he regret
C. had he regretted
D. does he regret
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