Rewrite the sentences

1. He will pay me tonight; I will have enough money to buy a car.

=>If he pays me tonight, I will have enough money to buy a car.

2. I will get a work permit. I will stay for another month.

=> If I get a work permit,I will stay for another month.

3. Study hard or you won't pass the exam.

=> If you don't study hard, you won't pass the exam.

4. Don't be impatient or you will make mistakes.

=> If you don't be impatient, you will not make mistakes.