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 Icaughtseveralfishafterfourhours,andonlythen

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问题详情:

 Icaughtseveralfishafterfourhours,andonlythen

 I caught several fish after four hours, and only then _____ that the secret of success was patience.

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

【回答】

C

知识点:倒装与省略

题型:选择题

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