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    When and where he came here yet. A. isn’t known B. aren’t known C. has not known D. have not been known 【查看更多】

     

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     When and where he came here _______ yet.

      A. isn’t known    B. aren’t known    C. has not known   D. have not been known

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    When and where he came here _______ yet.

      A. isn’t known    B. aren’t known    C. has not known   D. have not been known

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    When and where he came here _______ yet.

    A．isn’t known

    B．aren’t known

    C．has not known

    D．have not been known

     

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