10. I had already heard, communicated 11.sent, are going 12.was, had been studying 13. woke up, had poured 14. paid, had phoned 15. drank, hurried 16.got, heard , had canceled 17. had spoken, realized 18.returned, told , had phoned, was 19. began, lasted, enjoyed 20. arrived, had been waiting 21.confessed, had made, apologized 22. had cut, finished 23. saw, had stopped, was smoking 24. had been walking, walked( had walked)