1. If there were no oil in the engine, the car would break down.
2.If Mark finishes early, he will take us out.
3. If you wanted to go on a ghost tour, you could go to Edinburgh.
4. You will burn yourself if you're not careful.
5. If I had a toothache, I would go go to the dentist.
6.If the polar ice caps melt, sea levels will rise.
7. If Sam repairs the car, we will go for a drive.
8. If you needed money, you could get a part-time job.