1)Is it a cake?Yes , it is
2)Is there a cake on the table?Yes,there is
3)Are they bikes?Yes,they are
4)Are there bikes in the hall?Yes,there are
5)Is the apple nice?Yes,it is
6)Is it an apple?Yes,it is
7)Is there an apple in the basket?Yes ,there is
8)Is the tomato green?Yes,it is