-May I watch TV now, Mum? -No, you_______. You_______ do your homework first.A. don't; must B. don't; can't C: can't, must D. can't; can
The doctor did what he could_________ the dying man.
–Would you like some coffee or tea? –________. Water is OK.
The young man used to_______ to work, but he is used to________ to work now.
–Can you hear me? –No, I can’t. Would you please speak________?
Today is my mother’s ________ birthday. I will buy her a gift.