问题补充：
--- Would you like to go for a picnic to enjoy the fresh air outside this weekend?
--- . It will be a rainy day.
A. I’d love to
B. I’m afraid not
C. I hope to
D. I think so
答案：
A. I’d love to
(答案→)B. I’m afraid not
C. I hope to
D. I think so
解析：根据 It will be a rainy day.可知，前面应该是说不能去，故用I’m afraid not“恐怕我不能去”，其他选项都不符合题意。所以本题选B。
