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    22． the working efficiency, the boss allows the employees to have a coffee break. A．Improving B．To improve C．Having improved D．Improved 【查看更多】

     

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    ____ the working efficiency(工作效率), the boss allows the employees to have a coffee  

       break.

             A. Improving             B. To improve     C. Having improved D. Improved

     

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    ____ the working efficiency(工作效率), the boss allows the employees to have a coffee  

       break.

           A. Improving         B. To improve     C. Having improved     D. Improved

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    ____ the working efficiency（工作效率）, the boss allows the employees to have a coffee    break.

    A．Improving                                                  B．To improve

    C．Having improved                                        D．Improved

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