问题
选择题
________ the working efficiency, the boss allows the employees to have a coffee break.[ ]
A. Improving
B. To improve
C. Having improved
D. Improved
答案
答案：B
搜题请搜索小程序“爱下问搜题”
________ the working efficiency, the boss allows the employees to have a coffee break.[ ]
A. Improving
B. To improve
C. Having improved
D. Improved
答案：B
