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

问题补充：

Why not help when you were in trouble?

A. you ask for

B. ask for

C. asking for

D. asks for

答案：

A. you ask for

(答案→)B. ask for

C. asking for

D. asks for

解析：why not do sth.？表示“为什么不做某事？”是固定句型。本题的意思是“当你在困难中的时候，为什么不寻求帮助呀？”所以本题选B。