阅读对话，回答问题。
Sue: Hello, I want to buy some ping­pong balls. Can you help me?
Clerk: Sure. Do you like these balls or those balls?
Sue: I like these balls. How much are they?
Clerk: They’re 2 dollars each.
Sue: I need three ping­pong balls.
Clerk: OK. Here they are.
Sue: Thank you.
Clerk: You’re welcome.
【小题1】What does Sue want to buy?
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【小题2】Are these balls 3 dollars each?
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【小题3】How much are the three ping­pong balls?
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补全对话

A．You're welcome.

B．What shape would you like?

C．I'd like some cherries, too.

D．What kind of pudding would you like?

E．Yes. I want to buy a pudding.

A: Can I help you?
B:1.________
A:2.________
B: I'd like a chocolate pudding.
A:3.________
B: I'd like a heart-shaped pudding.
A: Anything else?
B:4.________How much are they?
A: 70 yuan.
B: Here is the money.
A: Thank you. 
B:5.________

书面表达。
假如你想去服装店买一件外套，请以此为情景编写一段你与售货员之间的对话。不少于五个来回。
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--- How _____ are they? ( )
--- 30 yuan.

A．much

B．about

C．many