英语语法求助.this book is hard to read,this book is hard to be read.应该用主动还是被动呢this book is hard to read,this book is hard to be read.哪个对,为什么,

英语语法求助.this book is hard to read,this book is hard to be read.应该用主动还是被动呢this book is hard to read,this book is hard to be read.哪个对,为什么, Whose book is this? This is a book whose is this book? This book is yours Lily,is this book()? this is ( ) book. 英语语法!求助! Is this a book? Yes,this is. This is s book.(a book提问) This is my book.This book is mine造句 this is my book. this book is mine 区别是什么? 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..