Look at the wall. There are some pictures it.A. inB. onC. toD. at

问题补充：

Look at the wall. There are some pictures it.

A. in

B. on

C. to

D. at

答案：

A. in

(答案→)B. on

C. to

D. at

解析：考查介词用法。句意为：“看着墙，墙上有一些图画。”图画在墙上，故选B。