Номер 2
1 a
2 b
3 b
4 a
Номер 3
1 Is there
Yes, there is.
2 Are there
Yes,there are.
3 Are there
No,there aren't.
4 Are there
No, there aren't.
5 Is there
Yes, there is.
6 Is there
Yes, there is.
7 Is there
No, there isn't.
8 Is there
No, there isn't.