1. If he reads fifty pages every day, his vocabulary (to increase) greatly. 2. If they (to know) it before, they would have taken measures. 3. If I (to get) this book, I shall be happy. 4. If you really loved music, you (to go) to the Philharmonic much more often. 5. If you had not wasted so much time, you (not to miss) the train. 6. If you (not to miss) the train, you would have arrived in time. 7. You (not to miss) the teacher's explanation if you had arrived in time. 8. You would have understood the rule if you (not to miss) the teacher's explanation. 9. If you (to understand) the rule, you would have written the test paper successfully. 10. If you had written the test paper successfully, you (not to get) a "two" mark. 11. Your mother (not to scold) you if you had not got a “two” mark. 12. If your mother (not to scold) you, you would have felt happier. 13. If she (to ask) me yesterday, I should certainly have told her all about it. 14. If you (to do) your morning exercises every day, your health would be much better. 15. If he is not very busy, he (to agree) to go to the museum with us. 10. If I (not to be) present at the lesson, I should not have understood this difficult rule.