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    I had walked a few steps I realized that I was lost in the thick fog. A. unless B. Before C. When D. since 【查看更多】

     

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    I had walked a few steps _______ I realized that I was lost in the thick fog.?

    A. unless      B. Before         C. When     D. since?

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    I had walked a few steps ________ I realized that I was lost in the thick fog．


    1. A.
      unless
    2. B.
      before
    3. C.
      when
    4. D.
      since

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    I had walked a few steps ________ I realized that I was lost in the thick fog．

    [　　]

    A．unless

    B．before

    C．when

    D．since

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