1. 1- правильное
2- Maria doesn't have to be bacl early from the party
3- I don't have to go to school tomorrow...
4- правильное
5- правильное
6- правильное
2. 2. have to
3. doesn't have to
4. don't have to
5. have to tidy
6. don't have to
7. doen't have
3. 2. must
3. doen't have to
4. have to
5. must
4. 1. I'm allowed TO use...
2. can have (без ТО)
3. You're NOT allowed
4. you can't go into...
5. aren't allowed to talk...
6. if he isn't careful
5. 2. weasn't allowed, could
3. were allowed
4. couldn't, can
5. aren't allowed, can