2)How long has Anna had a computer?
She has had a computer for years.
3)How long have you had a computer?
I have had a computer since last week.
4)How long has your dad worked abroad?
He has worked abroad for two years.
4)How long have you lived in the countryside?
I have lived here since 2003.
5)how long has your sister had a dog?
She has had a dog for six months.