This is _book,__is there.A.her,mine B.his,my选哪个?

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This is ___book,____is there.A.her,mine B.his,my选哪个?
This is ___book,____is there.A.her,mine B.his,my选哪个?

This is ___book,____is there.A.her,mine B.his,my选哪个?
A
mine是物主代词
my是宾格

A
her加名词，mine是主语后加动词