1. Is there a text-book there? Yes, there is one. No, there isn't any
2. Is there any duster there? Yes, there is one. No, there isnt' any
3. Is there a pair of gloves there? Yes, there is one. No there isn't any
11. Are there plums there? Yes, there are some. No there aren't any
12. Are there horses there? yes, there are some. No there aren't any
16. Is there a sofa there? Yes there is one. No there isn't any.