----What made her so upset?
---- .
A. Lost her bike
B. Losing her bike
C. She lost her bike
D. Because of losing her bike
网友回答
A. Lost her bike
(答案→)B. Losing her bike
C. She lost her bike
D. Because of losing her bike
解析：考查非谓语动词。句意：什么让他如此沮丧？现在分词作主语表示抽象动作，下文为省略句，故选B。