For hay since?

For hay since: 1) I haven't seen him ___ a long time. 2) New ideas have been put into practice ___ he was elected our leader. 3) He worked at that company ___ ten years before he retired. 4) Our country's economy has been stable ___ the government took control of all prices. 5) Maggie broke her leg and had to stay in the hospital ___ two days 6) They've been in love ___ three weeks. 7) I haven't talked to him ___ last week 8) These cherry trees have bloomed every spring ___ 1980 9) They have been raising horses and cows on their farm ___ many years. 10) John and Bob have been working on this project ___ five months 11) I haven't seen him ___ a long time 12) She's been sick ___ yesterday 13) He's been working in the field ___ early this morning 14) He hasn't been in jail ___ more than three years. 15) They've been teaching here ___ quite a long time. 16) He hasn't been in jail ___ that time 17) We've been here ___ noon . For hay since: 1) I haven't seen him ___ a long time. 2) New ideas have been. ___ he was elected our leader. 3) He worked at that company ___ ten years before he retired. 4) Our country's economy has been stable ___ the government