Use the appropriate passive forms of the verbs to complete the sentences.
1. W a i t e r: Can I help you, sir?
Customer: We [already serve] ... , thank you.
2. — The Robinsons are having a party on Saturday. Are you going?
— I don't know if I [invite] ...
3. James is in the classroom. He [examine] ... in English Literature.
4. I don't think I will ever [pay] ... for the job I have done.
5. The document must [sign] ... not later than Monday.
6. The doctor said the child [badly hurt] ... in the accident.
7. When I came back to the studio, Lady Campbell [still interview] ... . I was surprised an interview could take so much time.
8. I didn't realize the window [break] ...
9. — That's a nice armchair.
— Yes, it's very old. It [give] ... to me by my great-grandparents.
10. His new novel [not publish] ... yet.