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 wouldn't get rid of his cough.
5.If she weren't shy,she would enjoy the party.
6.If I get a work permit, I will stay for another month.
7.If he took exercise,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.