complete the sentences with for or since.
1) we have known each other .. six years. 2) tina has worked as a april. 3) my brother has had this car.. three months. 4) my grandparents have lived in this house 1987. 5) they have been two hours. 6) mr jackson has worked at this hospital thirteen years. 7) tom has had the driving he was twenty. 8) monica has had a new job last month. 9) my sister has been a eight years.​