—What do you think made Mary so upset? — her new bike. A. As she lostB. LostC. LosingD. Be

问题补充：

—What do you think made Mary so upset?

— her new bike.

A. As she lost

B. Lost

C. Losing

D. Because of losing

答案：

A. As she lost

B. Lost

(答案→)C. Losing

D. Because of losing

解析：用完整的句子应这样回答：Losing her new bike made Mary so upset.