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    If we know more about causes the problem , we may measures it is late . A. which ; have ; when ; very B. what ; take ; before ; too C. which ; take ; until ; so D. what ; have ; before ; very 【查看更多】

     

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    22．If we know more about _______causes the problem, we may take measures before it is _______late.

    A．what; too  B．which; very      C．that; already     D．that; so

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    22．If we know more about _______causes the problem, we may take measures before it is _______late.

    A．what; tooB．which; veryC．that; alreadyD．that; so

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