12.

1. drunk
2. eaten
3. seen
4. cooked
5. done
6. ordered
7. lost
8. made
9. fried
10. baked

13.

1. Is the sauce good? I haven't tasted it yet.
2. Have you made pizza for dinner, Mum?
3. I don't think we have bought enough food for the party.
4. We haven't eaten takeaway in a long time.
5. Jane hasn't been able to make dinner herself. She's been too busy.
6. I'm not sure whether I like curry. I have never tried it before.
7. Tom hasn't finished his meal because he's full.