1. The manager always welcomes new employees.

=> New employees are always welcomed by the manager

2. Janet's colleagues gave her a present when she retired.

=> Janet was given a present by her colleagues when she retired.

3. Thomas Edison invented the phonograph in 1877

=> The phonograph was invented by Thomas Edison in 1872.

4. Stephen Court has just invented an armchair which can play music.

=> An armchair which can play music has just been invented by Stephen Court.

5. Where will your company send you next year?

=> Where will you be sent by your company next year?

6. During the recession, the firm was making people redundant almost every week.

=> During the recession, people was being made redundant by the film almost every week.

7. Had a special messenger delivered the package before you got to the office?

=> Had the package been delivered by a special messenger before you got to the office? 

8. The students usually hold the concerts at the university.

=> The concerts are usually held at the university by the students.

9. The scientists are studying the problem carefully.

=> The problem is being carefully studied by the scientists.

10. The police found two children in the forest.

=> Two children were found in the forest by the police.

36. New employees are always welcomed by the manager

37. Janet was given a present by her colleagues when she retired.

38. The phonograph was invented by Thomas Edison in 1872.

39. An armchair which can play music has just been invented by Stephen Court.

40. Where will you be sent by your company next year?

41. During the recession, people was being made redundant by the film almost every week.

42. Had the package been delivered by a special messenger before you got to the office? 

43. The concerts are usually held at the university by the students.

44.  The problem is being carefully studied by the scientists.

45. Two children were found in the forest by the police.