---SorrytosayIcan’tplaybasketballwithyouthisafternoon,forI’llhavetop

---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 blanketB.It’s a piece of cakeC.Don’t pull my legD.We’re all ears

A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。

正好我需要