Сhoose the correct alternative. a.i have stayed/stayed with my grandparents a lot when i was younger. b.the couple next door have lived/lived there for twenty-five years: i`m sure they`ll never move. c.gordon has started/started his first business in 2001. d.so far this year, we saved/we`ve saved over 500. e.before becoming a banker,my brother has studied/studied abroad for several years.