用适当的词填空，使对话完整正确。
A: Good morning.Can I help you?
B: Yes,please,I'd like to buy a mobile phone,but I don't know much about mobile phones.
A: Well,what brand do you like,Motorola,Nokia orSiemens?
B: I have no idea.Which brand is sold _1 of all?
A: Motorola and Nokia are more popular. You can buy a Nokia if you like.
B: How much is a Nokia?
A: It depends on 2 types you buy.The old type is cheaper and the new type is expensive.
B: I don't want the newest.A practical one will do.
A: You can have this one.It looks nice and works 3 and it's not expensive.
B: How much is it?
A: 1,200 yuan.
B: Does it include everything?
A: No.If you choose a number,you need to 4 another 200 yuan.
B: OK. I'll take this one.Thank you for your help.
A: It's my 5 .