“Is that a backpack?-No,it is not.”这句话哪儿错了?

That is a backpack in English .(划线提问)提问backpack a backpack.A.That is B.This is Is that a backpack?(做出否定回答） is that your backpack改为复数 Is that your backpack?的中文意思 That is her backpack 改成否定句 That is you backpack 改为复数 Is that a backpack in English?Yes,it is .___ __. “Is that a backpack?-No,it is not.”这句话哪儿错了? This is a backpack.（对.backpack提问） 单项选择：Is ( ) your backpack over there?A.this B.that C.（不填） 初一英语选择：That ____ her backpack.A.not is B.is not C.no is D.is no初一英语选择：That ____ her backpack.A.not is B.is not C.no is D.is no Whose is that backpack?(改为同义句) _______ does that backpack ______ ________? is that your backpack?同义句转换__________that backpack _____________?这2个空填什么 Is ____ your backpack No,it isn't .My backpack is big.That one is small.填this还是that Is that your backpack?(做否定回答） ''Is that your backpack''这个句子怎么翻译 your backpack is very nice .I wantmy mother to buy ____.A.one B.this C.it D.that