It's your book.与This is your book.的区别?

It's your book.与This is your book.的区别? Is this your book?( ),it's( ) is this your book?no,it's 什么.（提示he) It's your book与This's your book.这两句话有什么区别?如果指的不是book而是一个男性的teacher呢?第一句变成He's your teacher.那第二句呢? is it your book 与is this your book 意思一样吗. Is this your book?Yes,it is为什么是it is 而不能说it's It's this your pencil? -Yes,itis. It's that you book? -Yes,it is 错误 怎么改 1.Is this your english book?no,it's no.2.this not is your pen is white 改错 Is it your book Yes,it is .与 Yes,it's mine.回答的区别? (---) book is this?It's wanglin's book. Is this your()activity book?(teacher)括号里的词正确形式填空0Is this your()activity book?(teacher)whose textbooks()they?(be)No.It's().(Jim) This is a book.(It's,Its) Is this（）book?No,it's（）book. I like this book.It's my f____ book. Is this your book?No,I think it's____?Is this your book?No,I think it's ___?A.Jim B.Jim’s C.Jim’s brother D.Jim’s brothers是选B,还是C?为什么 This Eenglish book is not_____.Maybe it `s____.A.mine...Mike`s B.my...Mike C.mine...your 理由 2.this book is different--that one 2.don't read---the sun.it's bad--your eyers —Is this your book?-no,it 's not my _____A.own B.mine C.owner D.one