Rewrite the following sentences starting with if: He can’t go out because he has to study for his exam

Exercise 2: Rewrite the following sentences starting with if.
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. He doesn’t take any exercises. He is so unhealthy.
If........................................
7. Study hard or you won’t pass the exam.
If..........................
8. Don’t be impatient or you will make mistakes.
If....................................
9. I didn’t eat lunch, I feel hungry now.
If........................................
10. I don’t buy that book because I don’t have enough money.
If...........................................