单选题 Sophie. Why don't you take your friends to the football game?
Keith: ______
A. I don't think it's a clever idea.
B. Can't you think of anything better?
C. Well, they are not really football fans.
D. Nothing is worse than this. They hate football.

【正确答案】 C
【答案解析】[解析] 此句对应前面的建议。礼貌原则要求低调表达不同意见。A、B、D违反这一原则,显得很无礼。C说明不能采纳这个建议的原因,显得礼貌、得体。