一个英语对话作文（五年级水平）

A: Hello!Can i help you?
B and C: yes,please.I want to by some rulers,pencils and books.
A: How many are they?
B: I want to buy a ruler,three pencils and two books.
C: I want to buy a ruler,four pencils and three books.
A: There are two rulers,seven pencils and five books.
C: How much are they?
A: It's 15 yuan.
B: Here you are.
A: Thanks, good bye!
B and C: Bye!
D: You are good.This is money.You can buy some food.
B and C: Thanks,mum.