1)If I don't be busy, I'll come with you;
2)If it rains, we'll stay at home;
3)I'll call you, if I have time;
4)If she doesn't study hard, she won't pass;
5)If the weather be nice, we'll go to the beach;
6)You'll get fat, if you don't stop eating so much;
7)If I see John, I'll tell him about the party;
8)Mum will be very angry, if I don't tidy my room;
9)If we don't leave now, we'll miss the bus;
10)You won't go to the party, if you don't do your task.