There_________a dog.
There ISN'T a dog.
There________10 chickens.
There AREN'T 10 chickens.
There__________2 cats.
There ARE 2 cats.
There__________5 cows.
There AREN'T 5 cows.
There_________a duck.
There IS a duck.
There_________a rabbit.
There ISN'T a rabbit.