a) They have seen
the tower “Baiterek”. b) They saw the concert last week. c) I like it all my
life. d) They bought a lot of interesting books after the concert. e) They have
stayed in Astana since October. f) They gave known each other for 5 years. g)
When did they go to Astana? h) Dmitry went to Astana 3 month ago. i) Omar has
lived there for 5 months.