--Sorry to say I can’t play basketball with you this afternoon, for I’ll have to prepar

----Sorry to say I can’t play basketball with you this afternoon, for I’ll have to prepare for the coming examination.
----- . Have some fun!
A. Don’t be a wet blanket
B. It’s a piece of cake
C. Don’t pull my leg
D. We’re all ears

(答案→)A. Don’t be a wet blanket B. It’s a piece of cakeC. Don’t pull my legD. We’re all ears解析：考查交际用语. Don’t be a wet blanket 不要扫兴; It’s a piece of cake这是一块蛋糕;Don’t pull my leg不要托我后腿; We’re all ears我们洗耳恭听.句意:很遗憾的说,今天下午我不能和你去打篮球了,因为不得不准备即将来临的考试.——联系下文，开心一下。可知选A，最符合语境。

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