1. If I were you, I would write to her.
2. If I were taller, I would play in a basketball team.
3. If you stayed longer, you would meet my parents.
4. If she didn't eat so much, she would be slimmer.
5. If he didn't see them, he wouldn't know the truth.
6. What would you do if you saw him.
7. What would you do if you had million dollars?
8. If they had million dollars, they would travel around the world.
9. What would you do if you lost your key?
10. If I lost my key, I called my parents.