1. She has never gone on a plane before that.
2. My wife has already bought the tickets.
3. when the police caught them.
4. Helen had splitted up with John
5. We knew her adress because she had told us.
6. The children hadn't eaten for days so they were extremely hungry.
7. Everyone hugged each other after they had finished the exams.
8. because she had already seen the film
9. I have just bought a dress when a thief stole my bag.
10. My niece will have gone to London three times by the time she is sixteen.
11. My students raised some money after they had seen a documentary on TV about America.
12. It was half past three and we still hadn't eaten lunch.