题目内容：

补全对话

(It's supper time. Bob is hungry. He goes to a restaurant.)

Waiter: 31.1.

Bob：Yes, please. I'd like some dumplings.

Waiter: OK. 32.2.

Bob：Yes. I'd like a cup of coffee.

Waiter: Please wait a moment.

(In a few minutes)

Bob: 33.3.

Waiter: They are $45.

Bob: 34 4. Thank you.

Waiter: 35.5.

A.You're welcome.

B.How much are they？

C.Here is the money.

D.Are you ready to order？

E.Would you like something to drink？