1. If you had listened to me, you wouldn't have got into so much trouble.

2. If there were a screen on the window, there wouldn't be so many bugs in the room.

3. If he were not busy right now, he could help them.

4. If I were good at cooking, I could make all of my own meals.

5. If I were you, I could tell him the truth

6. If she hadn't come, he would have been disappointed.

7. If he were a good student, he would have studied for the test yesterday.

8. If I had eaten breakfast several hours ago, I wouldn't be hungry now.

9. If Mai had followed the doctor's orders, she wouldn't be sick.

10. If he had gone to bed early last night, he wouldn't be tired this morning.

11. If they behaved themselves, their parents would be happy about that.

12. If she had said sorry, he wouldn't have been angry 

13. if I were a rich businessman, I could afford to buy an expensive car.

14. If it hadn't rained last night, I would have gone to the barbecue

15. if my parents allowed me to go, I wouldn't have to stay at home.

16. If she paid attention to her cooking, the food wouldn't be horrible.

17. (Xem lại đề bài vì hơi vô lý) If the weather hadn't been very nice, we would have gone camping.

18. If the computer hadn't broken down, I wouldn't have had to stop my work.

19. If she didn't love him, she wouldn't forgive him easily.

20. If he hadn't been angry, I would have said something

19.