Choose the correct verb form. a) How long has Dmitry been living /does he live/ in Astana? b) How long has Omar been styding / does he study/ at school 15 . C) My friend has been looking/looked for a bike for 3 weeks d) I wrote/ have been writing/ this exercise since 4 o clock p.m e) I am tired because i wrote/ have been writing/ this exercise since 4 o clock p.m. F) My friend is working /has been working / as an air hostees since last mouth. g) I have bought/ bought/ a dictionary a few months ago