Ответ:

12. ...train had left.

13. ... he had bought in the morning.

14. ...that she had gone out.

15. ...after I had finished reading the book.

16. I had translated the article...

17. ...he has never been there.

18. The article was published last week.

19. The radio is listened to every day.

20. I'll be looking after my sister ...

21. They will have visited them by the next week.

22. We'll be preparing for the exam at this time tomorrow.

Объяснение: