---What do you think made the woman so upset？
--- weight.
A. As she put on
B. Put on
C. Putting on
D. Because of putting on
网友回答
A. As she put on
B. Put on
(答案→)C. Putting on
D. Because of putting on
解析：
此题也是一个省略回答，完整的回答是：Putting on weight made the woman so upset。用动名词短语作主语。故选C。