1. If you don't study, you won't pass the exam.
2. If you eat more, you will be fatter.
3. If it rains, we will cancel the trip.
4. If I have time, I will watch a movie.
5. If we study, we will pass the exam easily.
6. If the weather is nice, I will go swimming tomorrow.
7. If we pollute the water, we will have no fresh water to use.