Write in the plural.
This is a doll. - These are dolls.
That is a bus.
This is a fox.
That is a leaf .
That is a brush.
This is a man.
This is a toy.
This is a mouse.

2)That is a bus.- Those are buses.
3)This is a fox.-These are foxes.
4)That is a leaf.-Those are leaves.
5)That is a brush.-Those are brushes.
6)This is a man.-These are men.
7)This is a toy.-These are toys.
8)This is a mouse.-These are mice.