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    the employee’s working efficiency, the supervisor will allow them to have a coffee break. A. Improving B. To improve C. Having improved D. Improved [解析]选B.考查非谓语动词作状语.此处用不定式作状语表目的.分词作状语一般不表目的.故选B. 【查看更多】

     

    题目列表(包括答案和解析)

    ________ the employee's working efficiency, the supervisor will allow them to have a coffee break．

    [　　]
    A．

    Improving

    B．

    To improve

    C．

    Having improved

    D．

    Improved

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