问题补充：
—Tom，I’m sorry to say that I can’t go to watch tonight’s match with you，for I have to prepare for the coming exam.
—Have some fun!
A. Don’t have too many irons in the fire.
B. Don’t be a wet blanket.
C. Don’t put the cart before the horse.
D. Don’t pull my leg.
答案：
A. Don’t have too many irons in the fire.
(答案→)B. Don’t be a wet blanket.
C. Don’t put the cart before the horse.
D. Don’t pull my leg.
解析：考查谚语。A不要同时做太多的事情，要一心一意 ；B别这么让人扫兴！C不要本末倒置；D别开玩笑了；结合句意可知B正确。句意：—Tom,对不起我今天晚上不能喝你看比赛了，我得准备即将来临的考试。—别这么让人扫兴！
