Răspuns:
1. have been working
2. have been studying
3. have been living
4. has been playing
5. have been learning english
6. have been cooking
7. has been going
8. has been raining
9. have been sleeping
10. haven't been working
11. haven't been eating
12. haven't been exercising
13. hasn't been studying
14. haven't been living
15. hasn't been snowing
16. hasn't been playing
17. haven't been drinking
18. haven't been sleeping
19. haven't been watching
