1. 选词补全对话。

my,   your,   his,   her,   their,   our mine,   yours,   his,   hers,   theirs,   ours

Miss White: There are many books in my bag. Look! Whose Chinese book is this?

Alice: It's Lily's. It's book.

Miss White: Whose English book is that?

Lily: It's John's book. It's .

Miss White: Whose maths books are these?

John: They're Alice's and Amy's books. They're .

Miss White: Is this music book, Oliver?

Oliver: Yes, it is book. It's .

Miss White: Are these your art books?

Sam and Lucy: Yes, they're books. They're .