who's or whose
_______ the father of your mother?
the sister of your mother
aunt
sugar
noncount
______ the person that cleans your house?
who's
the son of your daughter
grandson
pencil
count
__________ father is the oldest?
whose
the husband of your sister
brother-in-law
furniture
noncount
__________ dog is this?
whose
the mother of your cousin
aunt
student
count