20. These exercises have to be done by her.
21. Is the cake being cut by Marry with a sharp knife?
22. The children didn't have to be looked after properly by them.
23. All the workers of the plant weren't being instructed by the chief engineer.
24. Does the engine of the car have to be repaired by them?
25. My pen didn't use to be borrowed by him.
26. A map should be brought along!
27. He advised that exercises should be done regularly.
28. He advised that I should do all the homework.
29. By whom was this book written?
30. Jack suggested that we play chess.
31. I was told about it by a man I know.
32. This work can't be finished before 9.
33. They decided that the house should be sold.
34. He has the duty to lock all the doors.
35. Nam will continue using that car.
36. Finishing this test in an hour is difficult for me.
37. He was seen climbing over the wall by me.
38. I was given a present on my birthday by my friend.
39. You don't need to type this letter.
40. I like it when you wear this dress.