These books are 是yours还是your 是Mary ’ book还是Mary ’s

these books are (I),and those are (you) Are these the books you are checking out和Are these the books you are borrowing有什么区别? These are ()() my books. Are these books ( )(your)? These books are _____. Are you _____ in these _____story books.（ interesting These books to____( I ),____(you)are over there 改错：Do you think these books are made from paper These books are all a___history.Do you like them? -whose are these new books.are these[ ][you]books,millie.-no,[ ][they]aren't.用合适的代词填空 Are these books all yours? 改错：These are ours books These are the__(students)books John,are these books----(your) These are ( )(她的)books Are these students' books?对错 These books are distributed freely. These exercise -books are ( ).括号是填their还是theirs?