These are
two desks
That/not/their/
That isn't their desk.
That is
a window
These/my/
These are my doors
this/our/?
Is this our lamp?
These/his/
These are his chairs.
This/not/your/
This isn't your wardrobe
This is
a wardrobe
These are
two clocks.
that/her/?
Is that her clock?
That is
a door.
those/her/?
Are those her bed?
Those are
three chairs.
Those are
two beds