–Is this book yours ? – No it’s his , is inbag .A. Mine , myB. My ,mineC. Mine mineD. My ,

–Is this book yours ? – No it’s his , is in bag .
A. Mine , my
B. My ,mine
C. Mine mine
D. My ,my .

(答案→)A. Mine , myB. My ,mineC. Mine mineD. My ,my .解析：考察代词。Mine名词性物主代词，可做主语，表语； my形容词性物主代词，一般用作定语。句意：这是你的书吗？——不，这是他的，我的在书包里，可知前面用mine作主语，下文用my做定语。故选A。

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