Is this her eraser?(改为复数句）

This is her an eraser.与This is her eraser.This is her an eraser.与This is her eraser.为什么不用“an”? Is this your eraser?---No,it isn't.I think ___.A.it her eraser B.its her eraser C.it's her eraser Is this her eraser?(改为复数句） _ has an eraser .This is her eraser .横线上天什么 这句话的翻译 This is ________ eraser.Is it ________ eraser?A.a,she B.an,her C.an,she D.×,her is this your eraser?no,it is not,it is（ ）,填空,me,my,her,hers, 是This eraser is mine还是This eraser is my? Is this----------eraser A、he is B、he C、her D、she I guess this is eraser. this is eraser的意思 Is this ( ) eraser?A her an B an C a D /说明理由 This is ( )eraser. ( )eraser is in the pencil case . This is an eraser 对an eraser 提问 That is her eraser.改为一般疑问句 That is her eraser改为否定句 it is her eraser改为否定句 Is that her eraser?作肯定回答 This is my eraser. Is that_____(you)