- Who left the window _______?- Sorry. I forgot _______ it when I left yesterday.
--Mr. Smith, would you please speak a little more ? --Sorry! I thought you could follow me.
--Hello, Jimmy! Long time no see. ? ---I’ve just bought a new car. It’s great.
---Hi, Miss Ding. I hear you ______in America when you were very young! ---But now I’m in Nanjing. And I’ve been _____Chinese food since I moved here.
--- Let’s plan a surprise party for our class. What’s your idea? ---Why not ______ a short play?
---Could you come back home at four this afternoon? ---_______. I’ll be at an important meeting at that time.