问题补充:
— What do you think made Mary so upset?— her new bicycle.
A. As she lost
B. She lost
C. Losing
D. Because of losing
答案:
A. As she lost
B. She lost
(答案→)C. Losing
D. Because of losing
解析:考查动名词作主语。此句省略了谓语和宾语,补充完整是:— What do you think made Mary so upset?— her new bicycle made her so upset.缺少主语,所以用Losing。选C。