1. The environment would be much cleaner if people did not use so many chemicals.
2. I would help if I had more time.
3. If I had not gone to that exhibition in December, I would not met him.
4. If she had not studied so hard last month, she would not have passed her Maths exam.
5. If I won lots of money, I would plant lots of beautiful gardens in the cities.
6. If you had got up earlier, you would not missed the 8 o’clock train.
7. If people did not drop so much litter, our streets would be much cleaner.
8. I would go to the cinema tonight if I were not so tired.
9. If he had informed me earlier, I would have done something about it.
10. What would you do if a fire broke out) in your house?
11. If I spoke three foreign languages, I would have got that fantastic job.
12. If you had not read the book in your childhood, you would not have answered that simple question and won the prize.
13. She would not have disturbed if it had not been that important.