28. Which language do you know is ______(wide) spoken in the world?

27. A bookshelf is used for ______(store) books.

26. The _____(wool) sweater looks very nice on you.

25. We all think light is the second ______(use) invention.

24. They want to learn how to eat ______(health).

23. The boy’s parents were very ______(thank) to the policeman because of his help.

22. Of all the singers, she sings ______(beautiful).

21. When the child saw a big dog, he was too _____ (frighten) to move.

20. You must drive as _________(safe) as possible

19. The house caught a fire. The wounded man was carried to 　　　　　. (safe)