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    Generally speaking, according to the directions, the drug has no side effect. A. when taking B. when taken C. when to take D. when to be taken [解析]选B take和drug是动宾关系.要用过去分词作状语.可看作是when it is taken的省略. 【查看更多】

     

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    （2003年上海卷，39）Generally speaking ,        according to the directions , the drug has no side effect .

    A．when taking               B．when taken        C．when to take         D．when to be taken

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