-- How do you do?
---
--- Sit down, please!
--- .
--- __________ did Charles Smith hiccup?
--- For about two weeks.
---There will be more plants and animals.
---I _______.We can’t live without them.
---You speak English well.Who teaches you?
---Nobody.I learn it by _________.
— You can’t imagine great fun chatting online is.
— Really? But it may cause you a lot of trouble.
---We’ll do what we can ____English well this term.
---It’s high time for you to work hard.
---Won’t you like to come to Li lei’s birthday party?
---I will if I ______
---Who taught _____ to swim?
---I learned it by _____.
---_____ you put away your books?
---Yes, mum. I’ll do it at once.