选择正确选项，把对话补充完整。
A：________1________
B：Yes, please. I want a pair of shoes.
A：________2________
B：Green.
A: ________3________
B：Thank you. ________4________
A：They're 15 dollars.
B：I'll take them. Thank you.
A: ________5________
| A．You're welcome. |
| B．How much are they? |
| C．Can I help you? |
| D．Here you are. |
E．What color do you want?
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