1. Has been working
2. Have been studying
3. Have been eating
4. Have been living
5. Has been playing
6. Have been learning
7. Have been cooking
8. Has been going
9. Has been raining
10. Have been sleeping
11. Haven't been working
12. Haven't been eating
13. Haven't been exercising
14. Hasn't been studying
15. Haven't been living
16. Hasn't been snowing
17. Hasn't been playing
18. Haven't been drinking
19. Haven't been sleeping
20. Haven't been watching
______________________________________________________________________
S + am/is/are going to + V-infi + O
⇒ S + am/is/are going to + be + P2