– Let's play football after class shall we?– I can’t wait to do that.A. Forget it!B. Tha

问题补充：

– Lets play football after class, shall we?

– I can’t wait to do that.

A. Forget it!

B. Thank you.

C. Why not?

D. Not at all.

答案：

A. Forget it!

B. Thank you.

(答案→)C. Why not?

D. Not at all.

解析：考查交际用语。A算了！休想！B谢谢；C为什么不？（表示同意）；D一点也不；句意：—下课以后我们去踢球。好吗？—为什么不呢？我已经迫不及待了。根据句意说明后者同意前者的建议，故C正确。