16. that building will be pulled down
17. the exercises will be corrected by the teacher tomorrow
18. dangerous chemicals have to be kept in the safe place
19. the meeting up had to be broken by the police
20. that room may be used for the classroom
21. your hands must be washed
22. the old building ought to be knocked
23. that report needn't be typed today
24. this room hasn't been used for ages
25. that problem can't be solved
26. we weren't told the news
27. i wasn't told the ending of the story by Paul
28. she will be given a prize by the teacher if she works well
29. she was bought a doll by her mother last week
30. the robber was found in the forest yesterday by the police
Mình gửi bạn câu trả lời nha, mình thức khuya để trả lời á, nên có viết sai chính tả thì bạn sữa lại dùm mình nha