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    33．The highway through the rain forest was completed in 1990, some animal species have died off. A．by when B．since then C．since when D．by which time 【查看更多】

     

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    The highway through the rain forest was completed in 1990, ________ some animal species have died off．


    1. A.
      by when
    2. B.
      since then
    3. C.
      since when
    4. D.
      by which time

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    The highway through the rain forest was completed in 1990, _____ some animal species have died off.
    [     ]
    A. by when
    B. since then
    C. since when
    D. by which time

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    33．The highway through the rain forest was completed in 1990, _________some animal species have died off.

    A．by when   B．since then C．since when       D．by which time

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    The highway through the rain forest was completed in 1990,        some animal species have died off．

    A．by when         B．since then          C．since when           D．by which time

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    33．The highway through the rain forest was completed in 1990, _________some animal species have died off.

    A．by whenB．since thenC．since whenD．by which time

    查看答案和解析>>


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