Am I correct?
have to or must
1-It is the first term exam,students have to bring copybooks in the examination room.
2-you mustn't drive fast;there is speed limit here.
3-we don't have to climb any higher;we can see very well from here.
4-waiters have to pay tax on the tips that they receive.
5-in my district there is no gas laid on.People [B]have to[/B] use electricity for everything.
might or may
1-warning:no part of this book [B]may[/B] be reproduced without the publisher's permission.
2-he has refused,but he might change his mind if you asked him again.
3-Tow parallel white lines in the middle of the road mean that youmay not overcome.
4-we'd better be early;there may be a crowd.
could or be able to or can
1-i could do it when I was at school but I [U]can't[/U] now.
2-when the fog lifts we will be able to see where we are.
- For Teachers