I'm sorry that I can not accept your ________ to attend your birthday party, Linda, because

I'm ________ to answer all the customers' letters tonight by my boss. [ ]

A. requirement; required

B. demand; requested

C. request; asked

D. request; required

不好的提高面子的做法是（）。

A.“水落石出”策略

B.“充实自我”策略

C.“自我表现”策略

D.“以德服人”策略