问题补充:
----What made her so upset?
----.
A. Lost her bike
B. Losing her bike
C. She lost her bike
D. Because of losing her bike
答案:
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。