1. If we had a garden, we could grow vegetables.
2. If we didn't turn on the TV all the day, we wouldn't have to pay a lot of money for electricity.
3. If there weren't cars in the world, what would happens?
4. If there wasn't the war, people would live more happily
5. If I were you, I would plant many trees and flowers around my house
6. If people didn't throw trash in the street, the streets would look beautiful.
7. If they did exercises more, they would get sick so often