this book is mine .就划线部分提问 （mine划线）

this book is mine .就划线部分提问 （mine划线）
还有
1.I like to work with---------very much.
a.she b.her c.hers d.she's
2.she is a good student.------------ she?
a.is b.isn't c.does d.doesn't

Whose book is this?
1、B
2、B

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