1. He had seen
2. had fed
3. was; had seen
4. broke; had jumped
5. had disappeared; shot
6. had finished; went
7. didn't tell; had bought
8. My dog bit me, because I hadn't fed him.
9. My dog ran away, after he had bit me.
10. Before I called the police, I had called for an ambulance
11. After the ambulance had come, I watched a lame movie.
12. The policeman told me, that a very big rat had eaten my dog.