Rewrite with conditional sentences: He can't go out because he has to study for his exam. She is lazy so she can't pass the exam

Rewrite with conditional sentences
1. He can't go out because he has to study for his exam.
--->If
2. She is lazy so she can't pass the exam.
--->If
3. He will pay me tonight; I will have enough money to buy a car.
---> If
4. He smokes too much; that's why he can't get rid of his cough.
---> if
5. She is very shy, so she doesn't enjoy the party.
--->if
6. I will get a work permit. I will stay for another month.
--->if
7. He doesn't take any exercise. He is so unhealthy.
--->if
8. We can't get the ticket because I don't have the right change.
--->if
9. Study hard or you won't pass the exam.
--->if
10. Don't be impatient or you will make mistakes.
--->if