There are many (child / children) in the classroom.
children
I like eating fruits. I like to to eat (mango / mangoes).
mangoes
There is (a bus / buses) at the bus stop.
a bus
There are ( monkeys / monkeies) on the tree.
monkeys
There are three (bedroom / bedrooms) in my house.
bedrooms
There (is / are) (a pillow / pillows) on the bed.
There is a pillow on the bed.
There ( is / are) always lots of ( fish / fishes) in the sea.
There are always lots of fish in the sea.
