1 If you don't invite Mark, he won't come.
2 If it doesn't snow, the children won't make a snowman.
3 If Harry calls you, he'll tell you the truth.
4 If I don't learn, I won't pass my test.
5 If you stop going to bed late, you won't be sleepy.
6 If the alarm clock doesn't ring, we'll be late.
7 If Mark goes on holidays, Sara will take care of his dog.
8 If Katie prepares dinner, Mark will wash the dishes.
