1.Today we ... for Moscow. a.have been leaving
b.leave
c.are leaving
d.will leave
2.We ... 20 new houses this year.
a.have built
b.had built
c.were building
d.built
3.The top manager ... the documents for half an hour already.
a.studied
b.has been studying
c.will study
d. have studied
4.The room looked very clean when I came yesterday. ... you ... it?
a.Are, cleaning
b. Are, cleaning
c.Did, clean
d.Had, cleaned
5.- How long ... you ...?
- Since I was 18.
a.have, been driving
b.did, drive
c.do, drive
d.has driven
6.We ... their family for long.
a.have been knowing
b.knew
c.are knowing
d.have known
