this is a book of tom 还是tom‘s请顺便解释下什么时候加’s什么时候不加

This is a book This book is of great v____ to beginners. This book is very important to leaders of English的同义句This book is ( )( )( ) to leaders of English This book is difficult_you_read.英语选项A.for；to B.of；to C.for；in D.on；to the a() of this book is a very young girl This is a book of mine.和This is a book of me.哪句话对?为什么? How is this book different ( )that?A:from B:about C:of D:to为什么A对? this is a book ---------[to/about]stamp,怎么写 Is this a book? Yes,this is. This is s book.(a book提问) This kind of book is written to .A.old B.new C.the old D.young.选哪个 是用this is a book of english 还是用this is a book with english为什么 This is a book答语 The first lesson of this book ____ camous life.A.is focus on B.focuses on C.is focusing to D.focuses to He is the a_______ of this book this is --(new)book of all I think reading this kind of book is a good way to beyond my imagination 句子中的is是什么成分?应该 that is WHAT IS THE NAME OF THIS BOOK TOUCHSTONE BOOK怎么样