1. If there were a screen on the window, there wouldn't be so many bugs in the room.
2.If he were not busy right now, he could help them.
3.If I were good at cooking, I could make all of my own meals.
4.If I were you, I could tell him the truth.
5.If he were a good student, he would have studied for the test
6.If I had eaten breakfast , I wouldn't be hungry now.
7.If Mai had followed the doctor's orders, she wouldn't be sick
8.If Tom had a tickets ,he could go to the concert
9.If he wasn't bad at English, he could understand that English letter
10.If Ba were rich,he can travel around the world