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Hefailedthemid­termexaminationandonlythen

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问题详情:

Hefailedthemid­termexaminationandonlythen

He failed the mid­term examination and only then________how much time he had wasted.

A.he realized  B.did he realize  C.he had realized D.had he realized

【回答】

B

知识点:倒装与省略

题型:选择题

标签:Hefailedthemid