You ought to have helped him, ______?

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问题 You ought to have helped him, ______?

选项 A、haven’ t you
B、hadn’ t you
C、didn’ t you
D、oughtn’ t you

答案D

解析本题考查情态动词。当前句情态动词是ought to时，附加问句要用oughtn’t或shouldn’t进行反问。

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英语

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