Spell it!
m o u s e
What is it?
It's a mouse.
that / her / ?
Is that her desk?
that / his / ?
Is that his desk?
What is it?
It's a desk.
that / his / ?
Is that his screen?
this / his / mouse
This is his mouse.
Spell it!
s c r e e n
What is it?
It's a screen.
that / her / ?
Is that her keyboard?
Spell it!
k e y b o a r d
this / her
This is her keyboard.
that / his
That is his mouse.
What is it?
It's a keyboard
Spell it!
d e s k
that / his / screen / ?
Is that his screen?