1. Is taking
2. Are (we) having
3. Has
4. Am not solving
5. Comes
6. Begins
7. Do (you) wake up
8. Are (you) doing
9. Don't work, am working
10. Isn't sleeping, is studying
11. Do (you) review
12. Am not going
13. Don't understand
14. Works
15. Takes
16. Is
17. Is
18. Is smelling
19. Don't belong
20. Do (you) live