Why not help when you were in trouble?A. you ask forB. ask forC. asking forD. to ask

问题补充：

Why not help when you were in trouble?

A. you ask for

B. ask for

C. asking for

D. to ask

答案：

A. you ask for

(答案→)B. ask for

C. asking for

D. to ask

解析：固定句式，Why not do sth为什么不做某事。故选B，当你有麻烦时，为什么不请求帮助？