whose?
their
who?
they, a brother and a sister
Whose? наш
our
Who?
he,a little brother
who?
he, a grandpa/ grandfather
Who?
she,a big sister
Whose?
my
who?
she,grandma/ grandmother
whose?
its
Who?
cat, it
Who ?
mother+ father, mum+ dad, they
whose?
her
Who?
she, sister
whose?
his
Whose?
their
a father
he