问题补充:
---How long are you staying?
---I don’t know. .
A. That’s OK.
B. Never mind
C. It depends
D. It doesn’t matter
答案:
A. That’s OK.
B. Never mind
(答案→)C. It depends
D. It doesn’t matter
解析:考查情景交际。That’s OK.不客气;Never mind不介意;It depends视情况而定;It doesn’t matter没关系。句意:你要呆多长时间?我不知道。视情况而定。所以选C。