问题描述：
Although he had made many mistakes in his composition,____ have laughed at him?
A.Oughtn't we B.Should we C.Oughtn't to we D.Ought to we
答案应该选B,为什么?请说明原因,
A.Oughtn't we B.Should we C.Oughtn't to we D.Ought to we
答案应该选B,为什么?请说明原因,
问题解答：
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