根据对话内容，用方框中所给单词的适当形式填空。

A: What can I do for you?

B: Yes,  like some sausages. How much are they?

A: Forty yuan a kilo. How much would you like?

B: Half a kilo.

A: OK. What  would you like?

B: A kilo of beans and two kilos of apples.

A: That'll  thirty-eight yuan.

B: Oh, the strawberries look . How much are they?

A: Twenty yuan a kilo.

B: One kilo, please.  seventy-eight yuan.

A: Thank you. Goodbye.

B: Goodbye.