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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