1. I have watched Titanic twice.
2. The students haven't done their lessons yet.
3. Where have you gone for lunch?
4. Where have they lived?
5. What have you had for breakfast?
6. Mr and Mrs Brown have gone to Italy. They are going to come back tomorrow.
7. Have you ever met a famous people?
8. Tom and John haven't fed the dog yet.
9. My mother hasn't tidied the home.
10. I have known Mary for six years.