1. If you (run) , you (catch) a train. 2. I'm sure he (come) if you (invite) him. 3. I (call) you if I (finish) my work early. 4. If you (study) hard, you (pass) your exams. 5. If you (pass) the exam, you (get) the certificate. 6. If you (not hurry) , you (be) late. 7. (write) you to me if I (give) you my address? 8. If you (not miss) the train, you (arrive) on time. 9. If I (have) time tomorrow, I (do) it. 10. If it (snow) tomorrow, the children (play) snowballs. 11. If I (not see) you tomorrow, I (call) you. 12. If it (rain) tomorrow, our game (be) cancelled. 13. If I (do) all my work on time, I (spend) some time with my family. 14. If he (be) free tomorrow, he (come) to our party. 15. If you (tell) me what to do, I (be) really grateful. 16. We (finish) the job faster if she (help) me. 17. If she (read) 15 minutes every day, her vocabulary (increase) greatly. 18. If you (be) busy now, we (can) talk later. 19. We (can) go to the beach tomorrow if it (not rain) . 20. If you (want) those pictures, you (can) have them
