unit 102 买邮票

dialogue 
英语情景对话

A:Pardon me, but I was wondering if you could break a one.
A:打扰了，请问能否换一元的零钱？

B:Let me look. What do you need?
B:让我看看。你需要用来做什么？

A:I need the change for the stamp machine.
A:我要在邮票自动售贩机上买邮票。

B:I think dimes and quarters will do.
B:我想一角和二角五分硬币就可以了。