1. They have built a new house, have you seen it?
2. Have you shown your picture to mother? No, it's not ready yet.
3. I have watched that film, haven't you? Yes, I have, that's an interesting film.
4. Have you been to London zoo? Yes, I have.
5. Father have just returned from the sea.
6. Take these magazines, I've already read them.
7. Have you ever been to Greece? Yes, this country is very beautiful.
8. We haven't contucted the experiment yet.
9. She has never translated such difficult articles.
10. I've called him 3 times.
11. He have left to New-York.
12. Have you seen headmaster? No, I haven't