choose the best answer 1 .my mother went to georgia a week FOR/AGO 2.we haven’t seen each other FOR/SINCEwe finished university 3.they haved lived in

choose the best answer
1 .my mother went to georgia a week FOR/AGO
2.we haven’t seen each other FOR/SINCEwe finished university
3.they haved lived in manchester FOR/SINCE twenty days
4.brian finished his homework an hourt FOR/AGO
5.sam has been an engineer FOR/SINCE a long time
6.we have studied at the university FOR/SINCE 2007