It's the book that I'm looking for.中的that为什么不能用which替换

It's the very book that I am looking for... what I m looking for is XXX中的what能不能用which替换呢? 选择：It is the book ( )I am looking for.A.which B.that C.whom Is this book _______ you are looking for?为什么不能用that而用the one Which of you won the prize?I was looking for that book,but I It is the book___ I am looking for. A:which B:that This is the very book that I'm looking for.Where did you pic I'm looking for this book it's in the list of titles but I c I'm looking for this book it's in the list of titles the lis That's the very thing I've been looking for this is the very book that i am looking for中that 可以省略吗 定语从句 This is the book that you are looking for the book.为什么后