单项选择：Whose book are these?They are （ ）.

单项选择：Whose book are these?They are （ ）. （ ）（whose,whos)are these shoes?they are ( )(our,ours)选择正确的单词 单项选择：1.These my friends .are English A.are,these B.are,they Whose book are these They are him her Mr.Green's老师说的是 Mr.Gre whose is this book Whose are these books whose pens are these?____(these/they) are mine whose books are these?They're t______ ——Whose book are these?——They`re( our )books 为什么是our? Whose cakes are these They are （ ）,they aren't （ ）.A his min Whose are these new rackets?They are __________(there). Whose teachers are these They are ours改成单数形式 帮帮忙吧whose books are these?They are not_,but_.