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.

1) This is a doll. — These are dolls. 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.