填入一个适当的词补全对话，每空一词。
A:Good morning! Can I 1 you?
B:Yes,please. I’d like to buy a pair of leather tennis shoes.
A:What colour do you want?
B:I can’t decide.
A:Er...We have two colout, Which one do you like better?
B:I think I 2 white to black.
A:What size shoes do you wear?
B:Size 37.
A:How about this pair?
B:They look nice and soft. May I try them 3 ?
A:Certainly.
B:Oh,I’m afraid they’re a little 4 for me.
A:Here’s another pair in Size 38.What do you think of them?
B:Oh,good. They’re big enough. How much are they?
A:Two hundred and eighty yuan.
B:They’re too dear.
A:Maybe. But good things always 5 much.
B:OK.I’ll take them.
1.help 2.prefer 3.on 4.small/smaller 5.cost