Whose dress is this?
It's Susan's dress
these mirrors
this table
Whose apple is this?
It's Susan's apple
Whose dog is this?
It's Susan's dog.
Whose crayons are these?
They're Mark's crayons
this lamp
Whose glasses are these?
They're Mark's glasses
that mirror
those armchairs
Whose cat is this?
It's Mark's cat
Whose rulers are these?
They're Susan's rulers
Whose books are these?
They're Mark's books
Whose doll is this?
It's Susan's doll
this bed
these beds
these tables
that poster
those wardrobes
these wardrobes
this armchair
that lamp
those posters
those rugs
that rug
Whose cap is this?
It's Mark's cap
Whose ball is this?
It's Mark's ball