1. 补全对话。

A. Here you are.    B. How much are these ?  C. Where is my bag?

D. Can I help you?  E.You should be careful (小心).

-

-Yes, please. I need some tomatoes and carrots. I need some meat, too.

- OK.

- Thank you.

- Twenty yuan, please.

- Oh,

- It's here. Beside the box.