Exercise 4: Viết lại các câu sau ở dạng câu điều kiện.
1. He is busy right now. So, he can't help them.
2. I can't make all of my own meals because I am good cooking.
3. I am not you, so I can't tell him the truth.
4. He is not a good student, He didn't study for the test yesterday.
5. Mai is sick because  she didn't follow the doctor's orders.
6. They don't behave themselves so their parents are not happy about that.
7. I am not a rich businessman and I can't afford to buy an expensive car.
8. My parents do not allow me to go, so I have to stay at home.
9. She loves him so she forgives him easily.
10. She doesn't pay attention to her cooking so the food is horrible.