1. 用方框中所始单词的适当形式填空，使对话通圓、正确。每词仅用一次(每空一词)。

big    they    dollar    shoe    one

(Shop- assistant =S    Tom =T)

S: Can I help you?

T: Yes, please. I'd like a pair of football .

S: What color do you want?

T: White.

S: How about these ?

T: Oh, they are too small for me. Do you have ones?

S: Yes, those ones are big.

T: They look nice. How much are they?

S: They are 20.

T: OK. I'll take .

S: Here you are,

T: Thank you very much.