1. If he didn't have to study for his exam, he could go out.
2. If she weren't lazy, you could pass the exam.
3. If he doesn't pay me tonight; I won't have enough money to buy a car.
4. If he didn't smoke too much, he could get rid of his cough.
5. If she weren't very shy, she would enjoy the party.
6. If I don't get a work permit, I won't stay for another month.
7. If he took some exercises, he wouldn't be so unhealthy.
8. If I had the right change, we could get the ticket.
9. If you don't study hard, you won't pass the exam.
10. If you are impatient, you will make mistakes.
11. If you don't leave me alone, I'll call the police.