摘要：25． the working efficiency, 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, the boss allows the employees to have a coffee break.
[ ]
A．Improving
B．To improve
C．Having improved
D．Improved
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B．To improve
C．Having improved
D．Improved
______ the working efficiency, the boss allows the employees to have a coffee break.
A．Improving B．To improve C．Having improved D．Improved
查看习题详情和答案>>________the working efficiency, the boss allows the employees to have a coffee break.
| A．Improving | B．To improve | C．Having improved | D．Improved |