当你的朋友说“I’ve got a bad cough.”,你可以说A. How are you? B. I’m sorry to hear that. C. How do you do?
--- Can you tell me the way to Tianhe Plaza?--- Sorry. I don't know. I'm a new comer. --- .
--- Did you see Mr. Green?--- Sorry?---______________________?
---Whose coats is this?--- Is it a black one?---Yes, it is.---________________.-- Here you are.---Thank you very much.
--- Help yourself to some fish.---__________________.
---_______.--- I caught a cold.