Complete with for or since. they've lived in this house six months. mr smith has had this car years. she's been in our october. i haven't seen john monday. i haven't seen john days. they've been in italy 1998. they've been in italy a week. janet has worked in this office 1994. i haven't talked to david last week.

They've lived in this house FOR six months.
Mr Smith has had this car FOR years.
She's been in our class SINCE October.
I haven't seen John SINCE Monday.
I haven't seen John FOR days.
They've been in Italy SINCE 1998.
They've been in Italy FOR a week.
Janet has worked in this office SINCE 1994.
I haven't talked to David SINCE last week.