That is my dress
those are our dresses
That is my game
Thst my game.
That is my sister
Those are my sisters.
Plural form of "pencil case"
pencil caseS
What is plural case?
zero
They are pencil cases
That's my sister
Those are our sisters.
What is the plural sentence of that's my eraser
Those are my erasers
That is my knife?
Those are our knives.
That's a girl
Those are girls.
That's a box becomes plural
Those are boxes