问题补充:
--- Why not go and have dinner in a restaurant?
--- . It’s too expensive.
A. Why not
B. I agree
C. I’m afraid not
D. I’m sure
答案:
A. Why not
B. I agree
(答案→)C. I’m afraid not
D. I’m sure
解析:考查交际用语:A. Why not为什么不,好啊,B. I agree同意,C. I’m afraid not恐怕不能,D. I’m sure我确定。句意:--为什么不在饭店吃饭?--恐怕不能。太贵了。选C。