---Someone is knocking at the door. Who may it be? ---It ______ be Tom. He is still in the school.
Much more attention should_______ when we have exams.
-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 pretty girl is known_______ the public_______ a little film star_______ her excellent performance in a film
-There is something wrong with my bike. I'll have it_______ tomorrow. -Why not have Uncle Li_______ it?
Your father coughs a lot. You'd better_______ him_______ any more.