3.1
1. was
2. are
3. are
4. is
5. is
6. is
7. is
8. is
9. are
10. ... is ...? It is ...
11. are
12. is
13. is
14. are
15. is
16. is
17. ... are ...? I am ... .
18. are
19. is
20. will be
21. are
22. is
23. is
24. There are pupils in our class now. (24 и 25 смешаны)
3.2
1. is
2. is
3. are
4. are
5. are
6. are
7. are
8. are
9. There are many problems (ошибка в предложении)
10. are