1. slept; was
2. Was Tom crying; entered
3. were not doing; came; were playing
4. had been; went
5. Did the gardener cut....
6. found (без изменений)
7. was studying; was sleeping
8. did not know; confessed
9. did not come; had
10. were getting; called
11. Had you read; watched
12. took; ached
13. told; were
14. met; he had already graduated
15. were you doing; called
16. pushed; got