-Young man come off the grass; we forbid on the grass here. -Sorry I didn’t notice it.A.

问题补充：

-Young man, come off the grass; we forbid on the grass here.

-Sorry, I didn’t notice it.

A. to stepping

B. stepping

C. why

D. which

答案：

A. to stepping

(答案→)B. stepping

C. why

D. which

解析：考查词组：forbid doing禁止做某事，句意：--年轻人，从草地走开，我们禁止踩在草地上。