Rewrite the sentences.

1. Unless we hurry up, we'll be late for the concert.

2. Unless she eats too much candy, she won't have toothache.

3. Unless David and his brother change their way, they'll end up in the prison.

4. If I had money, I could buy new books.

5. If he weren't lazy, he wouldn't always get bad marks.

6. If today were Sunday, I wouldn't work all day.

7. If they didn't tell lies, everyone wouldn't hate them.

8. If we studied hard, we would get good result.

9. If the job were well-paid, she would apply for it.

10. If people cared much about environment, they wouldn't keep making it worse.

11. If there weren't so many billboards in our city, people could enjoy the view.

12. If the karaoke bar didn't make so much noise almost every night, the residents wouldn't complain to its owner.

13. If she didn't work in a noisy office, she wouldn't have a headache after work every day.