9 If it rains , we shall have to stay at home.
10 If he had worked hard, he would have achieved great progress.
11 If it is not too cold, I won't put on my coat.
12 I would have written the composition long ago if you hadn't disterbed me.
13 If he didn't read so much, he would not be so clever.
14 If my is at home, he will tell us what to do.