Bài 4:Đảo ngữ các câu sau
1. We would be happy if air pollution were the only problem.

2. They would be disappointed if you didn't 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________doesn't want____ to be tired the next morning.

5. If you  ________took_______ 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 will visit its museum.

8. If they offer me the job, I think I  ________will accept_________ it.

9. Many people  ______would be______ out of work if the local factory closed down.

10. What_________would happen________ if that red button was pressed?

11. I’d be absolutely astonished if Mary and James _____got________ married.

12. They won’t let you in unless you________show_____them your identity card.

13. My best friend gave me this book. She ______would be__________ very upset if I lost it.

14. Would you mind if I ________turned_______ up the radio.

15. I’m sure she__will forgive___________ you if you sincerely apologize to her.