—How long are you staying there?—depends.A. ItB. AnythingC. ThisD. Everything

问题补充：

—How long are you staying there?

—depends.

A. It

B. Anything

C. This

D. Everything

答案：

A. It

B. Anything

C. This

D. Everything

解析：

本题考查it用在一些固定句式中，it（all）depends.表示这要看情况而定。