4 what would you do if you hadn't to go to school?
5 I wouldn't say anything if I were you.
6 it would be great if we didn't have school tomorrow.
7 If I were as clever as my brother, I would pass the exam easily.
8 if I had a bike, I wouldn't ask my mum to drive me to school.
9 you would get bored if you didn't have any work to do.