单选题 —I hate dressing up. In my opinion, if you dress up, you're only one thing.
—______.
—A fool.

【正确答案】 C

【答案解析】[考点] 固定搭配
[解析] why?意为“为什么?”；How come?意为“怎么会?”；what about?意为“怎么样?”；此三项均不合题意。故选C。