Choose the right variant. 1. There's someone at the door. It
can/must be the postman.
2. Don't worry, you don't have /
mustn't pay now.
3. I think you had better / would
better take a pullover with you.
4. Jones could / must be
president if Smith has to resign.
5. Sorry. I can't stay any longer. I
have to / might go.
6. It was 5 o'clock an hour ago.
Your watch can't / mustn't be
right.
7. It's a school rule. all the pupils
have to / must wear a uniform.
8. I suppose that out team must/
should win, but I'm not sure.
9. Let's tell Diana. She could /
might not know.
10. In my opinion, the
government, might / should do
something
about this.