1. 根据对话内容填空

A:   ?

B: Yes,I want some apples. How much （2）?

B: They're six yuan.  

A: I also want some watermelons, some pears and some oranges.

B: They are 20 yuan.

A: OK. I want（3）. Here is the money.

B: Here you are.

A: （4） .