Помоги Английский язык

1) he has just left
2) has snowed
3) have known
4) has studied
5) haven't seen
6) has worked
7) has had
8) have been
9) have worked haven't finished
10) have cleaned
11) have met
12) has destroyed

1 has just left
2 has been snowing
3 have known
4 has been studying
5 have not seen
6 has been working
7 has had
8 have been
9 have been working,have not finished
10 have been cleaning
11 have met
12 has destroyed