1. If he didn't have to study for his exam, he could go out.
2. If she weren't lazy, she could pass the exam.
3. If he pays me tonight, I will 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 shy, she would enjoy the party.
6. If he took any exercises, he wouldn't be so unhealthy.
7. If you don't study hard, you won't pass the exam.
8. If you aren't impatient, you won't make mistakes.
9. If I had eaten luch, I wouldn't feel hungry now.
10. If I had enough money, I would buy that book.