---Don’t you know Zhang Tao in my office? --- _______ He is my friend.A. Yes, I do. B. No, I don’t. C. Yes, I am
——Did you go to Jack’s birthday party?——No, I _________.
——Must we finish the exercise today?——No, you________.
Your pocket money can be used to _____ charity, you used to _______ a lot on snacks.
The disabled people feel grateful _______ you ________ your help.
The old man should be treated with .