答案选a.You must be joking.
你肯定在开玩笑吧?
You must be joking.I can't afford to pay my bills,let alone buy
你肯定在开玩笑吧?我都我付不起我的帐单,更不用说买下楼房了.- Can I ask you a few questions? -_________请选择一个答案：a. Certainly. b. No, thanks. c. What do you do? d. It's a good idea.