You don't hear something very well. what do you say?

新概念英语练习册1you don't hear something very well。what do you say?你听得不是很清楚,你要怎么说?Someone gives you something。How do you thank him or her?something。How you want to speak to someone。有人给你一些东西,你要如何感谢他或她?你想怎样与某人交谈?What do you say first?第一句话说什么?You want to greet someone。你想欢迎某人。It is 9。30 a。m 现在是上午9点半。新概念英语练习册后面有答案的