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    What the forest of the USA in the last 350 years? A. has happened to B. is happened to C. has happened at D. is happening 【查看更多】

     

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    What _____ the forest of the USA in the last 350 years?
    [     ]
    A. has happened to
    B. is happened to
    C. has happened at
    D. is happening

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    What ________ the forest of the USA in the last 350 years?

    A. has happened to

    B. is happened to

    C. has happened at

    D. is happening

    查看答案和解析>>

    What ________ the forest of the USA in the last 350 years?

    A. has happened to

    B. is happened to

    C. has happened at

    D. is happening

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