If I am late for school, my teacher will be angry with me.
If I were you, I would say nothing about it.
If I give him the book, he'll never give it back to me.
If you don't have to do your homework, we can go jogging in the park.
If she comes to the party, I'll be happy.
Phone me when you come home.
When I pass all my exams, I'll throw a great party.
When he smiles, she feels happier.
When I do the housework, I'll go to the cinema.
When Mary does her morning exercises, she'll go to the bathroom.