—How long will you be staying?—I don’t know..A. That’s OKB. Never mindC. It dependsD. It d

问题补充：

—How long will you be 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：交际用语. That’s OK那好吧;Never mind不要介意;It depends 那要看情况而定;It doesn’t matter没关系.根据题意,你要呆多久?——我不知道。那要看情况而定。故选C。