. They (live) …have lived…………………………. in Hanoi from 1970 to 1999.

2. (you/ever/be) ………have you ever been……………………. to United State?

3. Nobody lives in those houses. They (be) …………have been…………………. empty for many years.

4. Cindy is in her office. Recently she (do) ……has done…………………. a big project.
5. I (not/talk) ………haven't talked……………………. very much when I was at school.
6. They (not/eat) ……haven't eaten………………………. meat since they saw that film about farm animals.
7.  I (just/ see) ……have just seen………………………. Kim outside the restaurant