When the fire fighters heard a ladyfor help in the burning house they rushed into save he

问题补充：

When the fire fighters heard a ladyfor help in the burning house, they rushed into save her.

A. to ask

B. asked

C. crying

D. to cry

答案：

A. to ask

B. asked

(答案→)C. crying

D. to cry

解析：只有C才能做宾补；A和D要去掉to.