Governmentworkersmusttakeanactiveapproachtotheirwork,c...

问题详情：

 Government workers must take an active approach to their work, carry out effective planning and decisive implementation, fulfill all their duties, and work tirelessly________ the public.

  A. in the service of  B. at the mercy of  C. as a consequence of D.  at the cost of

【回答】

A

知识点：介词

题型：选择题