IS your book older than hers?

IS your book older than hers? Is your father older than your mother? your brother who is older than you? here is your book what is your () book. this book isn't ().() book is over there.A.your,your B.yours,your C.yours,yours My grandmother is old,but your grandmother is older. that isn't your book,yours is here.这句话中的your yours有什么区别? is this your book?yes,() A.this is B.it isis this your book?yes,()A.this is B.it is C.it isn't 改错：is this book your? where is your book?thanks! This is ( ) book.your|yours where is your什么book Is this your m( )book Your father is a mother older than you. who is older ,you or your Partener中文是什么意思? it is your book对your提问 P____ your book is in your bag.