1. if he felt better, he would have gone to the final match
2. If I were in your place, I would have tried to do this.
3. if he will exercise more, he will be able to win.
4.If yesterday you asked me for a book, I would have given it to you.
3)1.he opened the door, so they entered
2.we saw that it does nothing.
3. He said he owned a very good library.