11.         Unless he phones her immediately, he won’t get any information.

If he doesn't phone her immediately, he won’t get any information.

12. In spite of having no interest in folklore, Sylvia still enjoyed the story.

Although Sylvia had no interest in folklore, she still enjoyed the story.

13. My mother last told a fairy tale two years ago.

It’s been two years since my mother last told a fairy tale.

14. I think it would be a good idea if you joined the beginner’s class.

I suggest that you join the beginner’s class.

15. Charles Perrault wrote Cinderella in French in 1697.

Cinderella was written by Charles Perrault in French in 1697.

16. I had a shower and the telephone rang.

When I had a shower, the telephone rang.

17. People don’t care much about the environment, so they keep making it worse.

→ If people cared more about the environment, they wouldn't keep making it worse.

18. She suffered from a serious disease because of drinking contaminated water for a long time.

→ Since she drank contaminated water for a long time, she suffered from a serious disease.

19. The drainage system is damaged. There is not enough water for the crop.

→ If the drainage system were not damaged, there would be enough water for the crop.

20. “Why don’t you turn off more lights in the house to reduce your eyestrain?”

→ If I were you, I would turn off more lights in the house to reduce your eyestrain.