Вставити займенник Is this (your/yours) book.
It's (their/theirs) problem, not( our/ours)
Are those (your/yours)shoes?
They is not (my/mine)hat. (My/mine) is yellow.
They know (our/ours) address but we don't know (their/theirs)
(My/mine) room is bigger than (her/hers), but (her/hers) is nicer.
(My/mine) sister has a son, but l don't know (his/her) name.
Are those cases (her/hers)?
These are (my/mine) glasses.
It's (our/ours) house and that is (her/hers)