从方框中选择恰当的句子，将对话补充完整。
A—Mr. Black B—Shop Assistant
A: Good morning.
B: Good morning. Welcome!
A: Will you show me some T-shirts?
B: Sure.
A: Size fourteen.
B:
A: White.
B: Here you are. This is the best in our shop.
A: Good. 4.
B: Eleven dollars.
A: , please. Here's twenty fivedollars.
B: Here's your change. Thank you.
