英语选择题： An eraser is made of ____ ? A. rubber B. cotton C. water D. oil

英语选择题： An eraser is made of ____ ? A. rubber B. cotton C. water D. oil It is an eraser. It is an eraser? This is an eraser 对an eraser 提问 Is that an eraser?的回答 this is an eraser 改复数 It is an eraser in English. It is an orange eraser.改为复数 this is an eraser 变复数.快 This is an eraser.(改为否定句) This is an eraser.(改为否定句) It is an eraser .改为否定句 英语句型转换 （请附加理由,谢谢!）This is an eraser in the box? 对an eraser 提问—— —— in the box? 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”? This is eraser,eraser is inThis is eraser,eraser is in the pencil box.A.a;The B.an;The C.an;An D.the;The(对了,) there is an eraser on the desk 对划线句提问 an eraser 划线 It is an eraser in English?画线部分提问 an eraser画线【 】 【 】 it in English an eraser 还是 a eraser