经济法律关系的发生、变更和消灭必须具备的条件包括( )。 A．经济法律规范 B．经

口语应用。(每小题1分，共5分)
根据对话内容，选用方框中适当的句子，补全对话。

A．What’s the price of it? B．I’ll take it C．What color do you want? D．Do you have a cheaper one? E．Why don’t you choose the yellow one? F．Is there anything I can do for you? G．Thank you all the same.

 
A：Good morning．  1
B：Yes, please．I’d like to buy a tie for my father as his birthday gift
A：  2 
B：Blue．My father likes blue best．
A：How abut this one?
B：Oh, it’s very nice．  3 
A：50 yuan
B：That’s too expensive．I don’t have enough money．  4 
A：Yes．This light blue one is only 30 yuan．
B：Well, this one looks very good．And the price is OK．  5 ．