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I ________ not helping them when they were in difficulties.

时间:2022-06-17 20:20:03

I ________ not helping them when they were in difficulties.

A.have regretted

B.had had regretted

C.doregret

D.does regret

答案及解析: C

解析:

这句句子的意思是“我真的后悔没有在他们困难的时候帮助他们。”如果句子需要谓语强调,我们往往用do的助动词结构加上动词原形。

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