1. If you don't buy coffee, we shall drink tea.
2. If he is free tomorrow, he will certainly come to our party.
3. My brother would not have missed so many lessons if he had not hurt his leg.
4. If my friend worked in my office, we should meet every day.
5. If you spoke English every day, you would improve your language skills.
6. If you get a "five", your mother will be happy.
7. If she had returned earlier, she would have been able to see him before he left.
8. If these shoes were not too big for me, I would buy them.
9. If you ring me up, I shall tell you a secret.
10. If you were a poet, you would write beautiful poetry.
11. If he did not read so much, he would not known English literature so well.
12. If he had come to our house yesterday, he would have met his friend.
13. If he doesn't pass his examination, he will not get a scholarship.
14. If she had not helped me, I should have been in a very difficult situation.
15. My father would have more free time if he did not read so many newspapers.
16. If only you had let me know, I would have gone there immediately.
17. If I were a famous singer, I would get a lot of flowers every day.