1 it isn’t (it is not)
2 there isn’t (there is not)
3 is there
4 there was
5 it’s (it is)
6 there was
7 it is /indirect question/
8 there aren’t (there are not)
9 there weren’t (there were not)
10 it isn’t (it is not)
11 it’s been (it has been)
12 There was
13 it isn’t (it is not)
14 there’s (there is)
15 there’s been (there has been)
16 Was there
17 There isn’t (there is not)
18 There’s (there is)
19 There was