求作业答案：从方框中选择适当的句

从方框中选择适当的句子补全对话.其中有两项是多余的.

A.I want to buy a hat for myself.
B.How much is it?
C. What color do you want?
D. What about this one?
E. What size do you want?
F. OK. Here you are.
G.It's beautiful, isn't it?

A: What can I do for you, Sir?
B: __ 1 __
A: For yourself? These are all for young people.__ 2 __
B: I like the blue one.
A: __ 3 __
B: Thank you. __ 4 __
A: One hundred yuan.
B: Oh, it costs too much.
A: __ 5 __ It is cheaper.It is only fifty yuan.
B: OK.I'll take it.Thank you.