POSSESSIVE PRONOUN or POSSESSIVE ADJECTIVE
her
A friend of _____________________ (her/hers) brother's called.
ours
A friend of _____________________ (our/ours) called.
our
He's _____________________ (our/ours) doctor.
their
I don't like _____________________ (their/theirs) apartment.
yours
Is he a friend of _____________________ (your/yours)?
mine
Is that your notebook or _____________________ (my/mine)?
their
Isn't _____________________ (their/theirs) son older than you?
our
That's _____________________ (our/ours) house, not theirs.
yours
That's not my problem. It's _____________________ (yours/your).
mine
Your car is green, while _____________________ (my/mine) is black.