this is book is differernt___that one填介词

Whose book is this? This is a book whose is this book? This book is yours Lily,is this book()? this is ( ) book. Is this a book? Yes,this is. This is my book.This book is mine造句 this is my book. this book is mine 区别是什么? This is s book.(a book提问) This book is ()(real) interesting 改错：is this book your? is ,an,book,english,this Whose is this book ?对吗? This book is about me. This is () useful story book.. is this her book?回答 This is ( ) book.your|yours