一What's behind door? I can't open it. 一Let me see.Oh,there's a chair.
— What a new computer! Can you tell me _________?— Just the day before yesterday.
-- Hi, Jim. I hear that you’ve just come back from Sanya. I’m calling to ask . -Great!
--- It’s said that scientists have ________ a way to deal with Influenza A/HiN1.--- Really? That’s great!
I don’t think it is a good idea, ________ ? A. isn’t it B. is it C. do we
Trees can stop the sand _____ towards the rich farmland in the south.