books in the bag (-)
There aren't books in the bag.
two cats in the bathroom (+)
There are two cats in the bathroom.
a lamp in my bedroom (-)
There isn't a lamp in my bedroom.
a book on the table.
There isn't a book on the table.
a pen in the bag (+)
There is a pen in the bag.
a spider on my bed (+)
There is a spider on my bed.
a cat on the sofa (?)
Is there a cat on the sofa?
a bed in the bedroom (?)
Is there a bed in the bedroom?
a sandwich on the table (-)
There isn't a sandwich on the table
a fridge in the kitchen (?)
Is there a frisge in the kitchen?
five dogs in the room (?)
Are there five dogs in the room?