Выберите правильную форму глагола. a) they have seen / saw the tower " baiterek". b) they saw / have seen the concert last week. c) they love rock and roll. i like / have liked it all my life. d) they bought / have bought a lot of interesting books after the concert. e) they stayed / have stayed in astana since october. f) they know / have known each other for 5 years. g) when did they go / have they gone to astana? h) dmitry went / has gone to astana 3 months ago. i) omar lived / has lived there for 5 months.