Ответ:

1. An invitation is received by me.

2. An invitation isn't received by me.

3. An interview is given by him.

4. The secretary was called by him.

5. A newspaper was bought by them last night.

6. His example has been followed by you.

7. The instructions have been obeyed by me.

8. A book hasn't been published by her.

9. That letter had been written by him.

10. A modern town had been visited by us.

11. All the exam papers had been collected by her.

12. A new song is being composed by Clive.

13. More facilities aren't being demanded by us.

14. Some money are being saved by me.

15. The man was being interviewed by the TV reporter.

16. The book wasn't being read by Claire.

17. Extra money was being received by the workers.

18. The film will be watched by Jane and me.

19. The job won't be taken by him.

20. That exam is going to be done by  Alison.

21. The wedding must be announced by her.

Объяснение: