1. ____ the engine, he realized it was broken.

2. Only by ____ hard can you pass the exam.

3. I regret ____ you that your application was rejected.

4. The flowers need ____ every day.

5. He ____ his homework; his notebook is empty.

6. No sooner ____ arrived than it started to rain.

7. I'd rather ____ out than stay in tonight.

8. The teacher insisted that we ____ on time.

9. I ____ my eyes tested last week.

10. You should avoid ____ during the rush hour.

11. The bridge ____ by the time we return.

12. They were seen ____ the building late at night.

13. If I ____ his advice, I'd be successful now.

14. ____ for your help, I would have failed.

15. He is looking forward to ____ his family.

16. The project ____ by a team of experts.

17. I'd prefer ____ coffee to tea.

18. Stop ____ me what to do!

19. You ____ me earlier; now it's too late.

20. The sun ____ in the East.

21. I wish I ____ to the concert yesterday.

22. He denied ____ the window.

23. It's high time you ____ a decision.

24. The news ____ not as bad as I thought.

25. He ____ for ten hours when I woke him up.