Hoàn thành các câu sau, cho dạng đúng của động từ trong ngoặc va chuyển thành dạng đảo ngữ.
1. We (be) __________ happy if air pollution were the only problem.
2. They would be disappointed if you (not go) ___________ to their party.
3. If we (use) _____ this kind of light bulb, we can save energy.
4. Peter should go to sleep early if he (not want) __________ to be tired the next morning.
5. If you (take) _____________ more exercises, you would be more resistant to diseases.
6. You may have car accident unless you (drive) ______________ more carefully.
7. If I travel to London, I (visit) __________ its museum.
8. If they offer me the job, I think I (accept) _______________ it.
9. Many people (be) __________ out of work if the local factory closed down.
10. What (happen) _______________ if that red button was pressed?
11. I’d be absolutely astonished if Mary and James (get) ___________ married.
12. They won’t let you in unless you (show) _____________them your identity card. 13. My best friend gave me this book. She (be) ______________ very upset if I lost it.
14. Would you mind if I (turn) ______________ up the radio.
 

15. I’m sure she (forgive) ____________ you if you sincerely apologize to her.