问题补充：
I prefer at home rather than out for a picnic on a rainy day.
A. stay, to go
B. to stay, to go
C. stay, go
D. to stay, go
答案：
A. stay, to go
B. to stay, to go
C. stay, go
(答案→)D. to stay, go
解析：考查固定结构。句意：在一个下雨天，我宁愿呆在家，而不是出去野餐。prefer to do sth rather than do sth，为固定词组搭配，注意to和than后面动词用原形，选D
