21．(2012·四川眉山一诊)—You shouldn't have left our sittingroom in such a mess!
—________Let's clean up together, shall we?
A.It's no use complaining.
B．No need to say.
C.What happened to you?
D.How dare you say so?
答案：A 考查交际英语。第一句暗含批评指责和抱怨的语气。根据答语的后半部分，可知，希望对方不要再抱怨了，而是一起整理房间。
