Is it your book Yes,it is .与 Yes,it's mine.回答的区别?

Is it your book Yes,it is .与 Yes,it's mine.回答的区别? Is this your book?Yes,it is为什么是it is 而不能说it's is this your book?yes,() A.this is B.it isis this your book?yes,()A.this is B.it is C.it isn't yes,it is your Is this your book?Yes it's_ book _your teachers short?No,they're_ It's this your pencil? -Yes,itis. It's that you book? -Yes,it is 错误 怎么改 _______?Yes,it is.A.Is that your book.B.Are these your books.C.Is there a book.（选择—） it is your book对your提问 Is it your coat?yes,it's. 这是一道初一英语考试题,回答的是Yes,It is my new book.请问问题是不是IS IT YOUR NEW BOOK? Is that your estate Yes,it is Is this gutar your Yes,it is( ) s that your book?---Yes,________.这为什么填的是yes,it is .而不是yes,that is .所有以Is that 开头问的都要用it is回答吗? is this your desk ------yes,it i______ ________________?(your,backpack) yes,it is . Is it your chick? Yes._____________ Is this ball your?Yes,it's() Is it your book?复数句