―What do you think made Tom unhappy?
― his new bicycle again.
A. As he lost
B. Lost
C. Losing
D. Because of losing
网友回答
A. As he lost
B. Lost
(答案→)C. Losing
D. Because of losing
解析：本题考查考生利用上下文语境，对省略结构的生成能力。本省略句可补全为：Losing his new bicycle again made Tom unhappy.