介绍:
Mum: What time is it, Mary?
Mary: It's ten o'clock, Mum.
Mum: Here is the key to the letter box, go and open the box, please.
Are there any letters, Mary?
Mary: Yes, Mum. There are three letters for you. Here you are.
Mum: They aren't letters. They are bills.
大家还在听
