问题补充：
---What a heavy rain!
----So it is. I prefer at home on such a rainy day.
A. watch TV; to go out
B. watch TV; go out
C. watching TV; to going out
D. to watch TV; going out
答案：
A. watch TV; to go out
B. watch TV; go out
(答案→)C. watching TV; to going out
D. to watch TV; going out
解析：C 考查prefer的用法。prefer doing to doing., prefer to do rather than do.故选C。
