Английский язык (нужная форма гл.)

1. Tom gave me the book yesterday but I knew he hadn't read it.
2. Alice came back from Australia and she said that she had enjoyed a lot there.
3. When I arrived home I realised that I hadn't phoned my grandparents.
4. The postman came after I had left the office.
5. When the old lady returned to her flat, she saw that burglars had broken into.
6. The train had left before Helen arrived at the station.
7. My grandmother had made some cheese sandwiches when I got home at 5.30.
8. After she had studied the lesson, she did the exercises.
9. Barbara forgot that she hadn't done any shopping for the weekend.
10. Jack was very tired because he had worked until late.
11. Before Henry came home, his friend had taken the dog for a walk.
12. By the time Linda parked her car, her boyfriend had drunk two cups of coffee.
13. My dog was hungry because he had had nothing to eat since breakfast.
14. I wondered where I had seen him before.
15. The robbers had escaped by the time the police arrived.
16. The policeman arrested the man who had stolen the money.
17. The computer showed that the George Hurt had committed some crimes in the past.
18. The man checked all the windows after he had locked the front door.
19. When I opened the chocolate box, I saw that somebody had eaten all of them.
20. When Elisa met Arthur, he had finished his studies at university.
21. I recognized him because I had seen his photo in the newspaper before.
22. Margaret was upset because her husband had forgotten her birthday.