1.there are,they

2.it is

3.there is, it is

4.it is

5.there is it is

6 it is

7. There are

8.there are

9.there were,they

10 there was,there were

I

1. there are    they
2. it is
3. there is   it is
4. there is
5. there is   it is
6. it is
7. there are
8. there are
9. there was     it is
10. it was          there were