选择正确的词填空：mine yours his hers ours theirs 1.this is her erase

选择正确的词填空：mine yours his hers ours theirs 1.this is her eraser.this is------.
2.this is my glue.this is------.
3.that is our folder.that is-----.
4.these are his crayons.these are------.
5.those are your books.those books are------.
6this is their classroom.this classroom is-----.