--What made her so upset? ----.A. Lost her bikeB. Losing her bikeC. She lost her bikeD.

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。