---How many students are there in your school?
---Oh, I see. The number of the students ______ more than 3,000.
---Why don't you go with us?
---Because I am______ . I have lots of homework to do.
---Who's your English teacher?
---Miss Gao. She teaches ______ English very well.
---Is this your bike?
---Yes, it's ______. It's a birthday present from my uncle.
---Sally, could you go and help your father wash the car?
---Why ______? I'm busy now. Amy is lying on the grass doing nothing.
---Miss Lin teaches ______ English this term.
---You're lucky. ______ is a very good teacher.
---Thank you for your help.
---______.
---Thank you very much.
---What did you do at the weekend?
---I did ______homework.