1. If the earth suddenly _________ spinning, we would all fly off it.

2. _________ it not been for his help, I would have been in big trouble.

3. You should bring a map _________ you get lost in the forest.

4. If I _________ that you were coming, I would have cleaned the house.

5. _________ you to win the lottery, what would you spend the money on?

6. I will lend you the book on condition _________ you return it by Friday.

7. If he _________ his promise, she would have been very happy.

8. You'd better go now, _________ you'll miss the last train.

9. If I _________ you, I would think twice before making a decision.

10. Had we known the truth, we _________ so much money.

11. _________ the alarm clock not gone off, I would have overslept.

12. If she _________ English better, she could have applied for that job.

13. Imagine you _________ on a desert island, what would you do first?

14. Unless it _________ soon, the crops will be destroyed.

15. _________ I been more careful, I wouldn't have made that mistake.

16. If he _________ more exercise, he would be much healthier.

17. We wouldn't be lost now if we _________ the map earlier.

18. You can stay here _________ you don't make too much noise.

19. _________ for the traffic jam, I would have been here on time.

20. If I _________ a million dollars, I would buy a private jet.

21. Should you _________ any problems with the software, call the help desk.

22. If he hadn't missed the flight, he _________ in Paris now.

23. _________ it not for his laziness, he could be a successful man.

24. They will let you in _________ you have a ticket.

25. If I _________ her address, I would have sent her a card.