Choose the correct verb form.
a) How long has Gulnar been living / does Gulnar live in Astana?
b) She has been finding / has found a job.
c) Samat has gone / has been to Germany.
d) How long has Zangar known / has Zangar been knowing Gulnar?
e) Zangar has been promoted / has promoted on his job.
f) Gulnar's parents have bought / have been buying a flat in Astana.
g) Gulnar has been engaging / has been engaged to Nurzhan.
h) Zangar has worked / has been working hard.