—What do you think made the girl so depressed？
— with her boyfriend．
A. As she broke up
B. Break up
C. Breaking up
D. Because of breaking up
网友回答
A. As she broke up
B. Break up
(答案→)C. Breaking up
D. Because of breaking up
解析：考察动名词做主语的用法。根据上下文可知是对what进行回答。使用动名词短语作句子的主语。AC都只能做原因状语。句意：—你认为是什么让女孩压抑？—与她的男朋友分手。