1. If I had studied harder, I ___ the exam.
2. If she ___ more carefully, she wouldn't have made that mistake.
3. I wish I ___ more time to spend with my family.
4. If only he ___ me the truth yesterday.
5. The new bridge ___ by the end of next year.
6. The project ___ for several months before the problems were discovered.
7. The company has decided to ___ the meeting until next Monday.
8. He explained that he ___ the documents the previous week.
9. By this time tomorrow, we ___ for more than twelve hours.
10. At 10 tomorrow morning, I ___ an important meeting.
11. I regret ___ him about the problem because it only made things worse.
12. I remember ___ the door before I left the house.
13. We ___ have taken a taxi. The bus was cancelled.
14. The lights are still on in his office. He ___ have left the building yet.
15. He ___ the meeting if you hadn't called him.
16. ___ the fact that he was very tired, he continued working.
17. ___ being expensive, the course was very popular.
18. I would rather ___ at home tonight.
19. We need to ___ the problem before it gets worse.
20. She was exhausted; ___, she continued working until midnight.