---- What made her so upset ?
---- .
A. She lost her bike
B. That she losing her bike
C. Losing her bike
D. It was she lost her bike
网友回答
A. She lost her bike
B. That she losing her bike
(答案→)C. Losing her bike
D. It was she lost her bike
解析：考查动名词短语做主语。第一句是对主语进行提问，那么回答部分必须可以在句子中做主语。选项中只有C才可以在句子中做主语。A项需要加故that构成主语从句。故C正确。