----- Nội dung ảnh ----- Rewrite these sentences by using conditional sentence Type I 1. Vegetarians don't eat meat. 2. People who live in a cold country don't like hot weather. → If 3. Teachers have to work very hard. 4. People who do a lot of exercise stay fit and healthy. → If 5. Mechanics understand engines. → If 6. People who read newspapers know what's happening in the world. → If 7. Pay electricity bill today or your electricity will be cut off. → If 8. Stop smoking otherwise your cough may be worse. → If 9. Unless we use less fossil fuel, they will run out soon.