要使得激励有效，最重要的应当是（）。
A．对员工实施奖励
B．建立激励保障制度
C．了解员工真正需要并加以满足
D．解决员工的各种问题
参考答案：C
I sit _____ Maria _____ Jim. [ ]
A. from, to
B. between, and
C. in, in
D. next, to
He accidentally ____ he had quarreled with his wife and that he had not been home for a couple of weeks. [ ]
A. let out
B. took care
C. leave out
D. made out
