----- What made you so upset? ----- my new bike.A. LostB. LosingC. Because of losingD. Si

问题补充：

----- What made you so upset?

----- my new bike.

A. Lost

B. Losing

C. Because of losing

D. Since I lost

答案：

A. Lost

(答案→)B. Losing

C. Because of losing

D. Since I lost

解析：省略回答。完整的回答是：Losing my new bike made me so upset.