А) 1. It is; it is
2. It is; there are
3. It is; it is
4. It is
5. There are
6. It is; there are
7. There are
б) 1. There is
2. It is
3. It is
4. There is
5. It is
6. There is
7. There is
8. It is
9. There is
10. It is
11. There is
12. There is
13. It is
14. There are
15. It is
16. It is
17. Is there
18. It is
19. There is
20. It is