Respuesta:
21. The car will not be repaired by William.
22. The DVD recorder has not been repaired by the technician.
23. The book has been forgotten by Steven.
24. "The Adventures of Tom Sawyer" was written by Mark Twain in 1876.
25. Many movies are made in Hollywood.
26. A presentation will be given by the students tomorrow.
27. My bike has been stolen by someone!
28. The newspaper is received by us every day.
29. All of the cookies were eaten by him.
30. The book was written by Mark Twain.
31. The room will be cleaned by the housekeeper.
32. Her boyfriend is going to be introduced to her family next weekend by her.
33. The kitchen is cleaned every day by them.
34. It was believed by everybody that Muhammad Ali was the most famous boxer of all time.
35. Two cakes are being baked for the party by my friend Ana.
36. Some interesting books have been read by me lately.
37. An email will be written to John by me tomorrow morning.
38. Cultural activities are being promoted by the mayor.
39. The garage is cleaned every month by somebody.
40. The school is cleaned every day by the women.
41. The criminals were caught by the police.
42. A report will be written by the manager at the end of the month.
43. The mail is opened every morning by the secretary.
44. "The Magic Flute" was written by Mozart.
45. The documents were sent to the wrong address by them.
46. Excellent food is served by this restaurant.
47. Millions of euros have been spent by tourists in Europe in the last few years.