6 Complete with for or since.

Решение:

1. We've lived in this house since 2005.
2. They've lived here for three years.
3. We haven't seen Jon for days.
4. I haven't seen Kelly since Friday.
5. We've had our car for three months.
6. I've had this bike since October.
7. Jenny's been in Italy since last week.
8. They've been in Madrid for a week.