1.There isn't a large table in my room. 1.Is there a large table in my room?.
2.There aren't three windows in my classroom. 2.Are there three windows in your classroom?
3.There is a table and four chairs in my sister's room. 3 Is there a table and four chairs in your sister's room?
4.There isn't a blackboard, four tables and five chairs in our classroom.4.Is there a blackboard, four tables and five chairs in our classroom?
5.There isn't a text-book and two exercise-books on my table.5.Is there a text-book and two exercise-books on your table?
6.There aren't very many children in the park yesterday.6.Are there very many children in the park yesterday?