How many ducks are there? There is....
There is one duck.
How many eggs are there? There are ...
four eggs.
How many ants are there? There is...
one ant.
How many bags are there? There is...
one bag.
How many dogs are there? There are ....
There are three dogs.
How many pencils are there? There are...
three pencils.
How many melons are there? There is...
There is a/one melon.
How many apples are there? There are....
six apples.
How many cats are there? There are...
There are two cats.