1. We must hurry, _________ we will miss the train.

2. _________ it not for your financial support, my business would have gone bankrupt.

3. If I _________ a millionaire, I would build a hospital for the poor.

4. If she _________ her umbrella, she wouldn't be soaking wet now.

5. _________ you require any further assistance, please contact the manager.

6. If you _________ the flowers every day, they will wither.

7. But for the fog, we _________ our destination on time.

8. _________ for his lazy lifestyle, he would be a successful man now.

9. If I _________ the truth last night, I would have told you.

10. Were I _________ to win the prize, I would donate half to charity.

11. I _________ you to the party if I hadn't been so busy then.

12. Had the firefighters _________ five minutes later, the whole building would have been destroyed.

13. Unless she _________ her behavior, she'll get into trouble.

14. If he _________ better last night, he wouldn't be so sleepy today.

15. _________ you happen to see him, tell him to return my book.

16. You can go out tonight _________ you finish your homework first.

17. If I _________ a car, I would drive to work every morning.

18. What _________ if you were lost in a foreign city without any money?

19. _________ for the scholarship, he wouldn't be studying in the USA now.

20. If you _________ the red button, the machine stops immediately.

21. Should any problem _________, let me know at once.

22. If the pilot _________ more experience, the crash might have been avoided.

23. _________ I in your position, I would accept the job offer.

24. Take some food _________ you get hungry on the way.

25. If they _________ the map, they wouldn't be lost in the woods now.