1. I _________ (be) sorry that I _________ (not be) nicer to him.
2. Nobody_________ (come) to the meeting because Angela _________ (forget) to tell people about it.
3. I _________ (see) her before somewhere - I _________ (know).
4. Because he _________ (not check) the oil for so long, the car _________ (break) down.
5. She couldn't find the book that I_________ (lend) her.
6. All the people that we_________ (invite) turned up, and some that we_________ (not invite).
7. They_________ (never find) where he_________ (hide) the money.
8. It was a firm that I_________ (never hear) of.
9. When she_________ (come) in, we all knew where she_________ (be).
10. The lesson already_________ (start) when I_________ (arrive).