1) is there a cat in the window? - yes, there is
2) are there a few changes in the text? - yes, there are
3) are there planry of glasses in the cupboeard? - yes, there are
4) were there a lot of people at the stadium? - yes, there were
5) is there anything on the plate? - no, there isn't
6) was there anybody in the room? - no, there wasnt
7) are there difficult exercises in this book? - yes, there are
8) is there somthing on the shelf? -yes, there is
9) Will there some interesting programmes on Tv tomorrow? -yes, there will
10) are there several vacant seats in the room? -yes, there are
11) were there any pears on the plate? -no, there werent