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    They seemed each other for a long time. A. knowing B. to know C. having known D. to have known 【查看更多】

     

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    They seemed ______ each other for a long time.

    A．knowing     B．to know        C．having known    D．to have known

     

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    They seemed ______ each other for a long time.

    A．knowing     B．to know        C．having known    D．to have known

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