Is this an eraser 怎么回答?（选择题）

Is this an eraser 怎么回答?（选择题） Is this your eraser怎么回答 is this your an eraser? This is her an eraser.与This is her eraser. This is an eraser 对an eraser 提问 is this eraser?回答 回答意思 This is an eraser That is a this is an eraser 改复数 this is an eraser 变复数.快 This is an eraser.(改为否定句) Is that an eraser?的回答 改错：1.This is his an eraser.（）2.She is an English girl.She na