(---) book is this?It's wanglin's book.
(---) book is this?It's wanglin's book.
whose book is this?It's( ).
Is this your book?( ),it's( )
This is a book.(It's,Its)
Is this()book?No,it's()book.
This is s book.(a book提问)
whose book is this?it's mike's.please______
This is a book,It's an English book.What's this?急.
This is Mary's book
It's your book与This's your book.
who is this book?it’s hers改错
is this your book?no,it's 什么.(提示he)