18, It has been to finished  today 

19, The bill may be paid for us 

20, They must be warned of the danger

21, This work has been finished 

22, The report has been finished by the Beth 

23, The meeting has been canceled 

24, He has been given a lot of money 

25, This house has been built by since 2005 my father 

26, All the letters were posted yesterday 

27, The newspapers are sent to Nha Trang by train

28, Volleyball is played in the schoolyard every day by my sister and me 

29, Many houses will be built in that area next year by the workers 

30, Another villa has been bought by Nam's father 

31, Ten apples were eaten last night by Lan 

32,  Class was started last week  

Mình không được giỏi tiếng anh cho lắm nếu sai bạn thông cảm nhé !

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18. It has to be finished by him today.
19. The bill may be paid for us by him.
20. They must be warned of the danger.
21. This work has to be finished.
22. The report has been finished by Beth.
23. The meeting has been cancelled.
24. He has been given a lot of money.
25. This house has been built by my father since 2005.
26. All the letters were posted by them yesterday.
27. The newspapers are sent to Nha Trang by train.
28. Volleyball is played in the school yard by my sister and I everyday.
29. Many houses will be built in that area by my sister next year.
30. Another villa has been bought by Nam's father.
31. Ten apples were eaten by Lan last night.
32. A dancing class was started last week.