This is the book which I am looking for 中 which可不可以省略?还有which可不可以换成that?有人说which不可以省略 但是在定语从句中which做的是宾语啊 为什么不可以省略?

this is his the best book改错 This book is talking about the w( ) This is the book+that定语从句 This book is famous all over the He is the a_______ of this book WHAT IS THE NAME OF THIS BOOK TOUCHSTONE BOOK怎么样 1.The teacher and what he said()you told me about makes me angry A.who B.that C.which D.whom2.everything()your mother does is for your study A.that B.what C.which D.with which 3.this is the best book () i have ever read on grammar A.that B.what C.whi This is the student's book和 This is the studentThis is the student's book和 This is the student is book 一个概念吗? 教室的英文This is my classroom,which is a nice big room.The windows are big and the walls are whi this book is the most interesting book this book is the most interesting哪个对?还是都对? This book is on the desk不加is This is your book.My is on the desk. This book _________Lucy's book.Her name is on the book cover. This is the first two sections of the book. THIS IS NOT THE END OF THE BOOK怎么样 Whose book is this? This is a book whose is this book?