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    Though they met , they seemed to have known for a long time. A. at the first time B. the first time C. at first D. for the first time 【查看更多】

     

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    Though they met _____________, they seemed to have known for a long time.

    A. at the first time　 B. the first time　 C. at first　　 D. for the first time

     

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