She sat on the top of the stairs her head on her crossed arms and cried.A. forB. whenC. w

问题补充：

She sat on the top of the stairs her head on her crossed arms and cried.

A. for

B. when

C. with

D. while

答案：

A. for

B. when

(答案→)C. with

D. while

解析： 考查with的复合结构。 她坐在楼梯上抱头痛哭。