a backpack.A.That is B.This is

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） This is a backpack.（对.backpack提问） Is that a backpack in English?Yes,it is .___ __. “Is that a backpack?-No,it is not.”这句话哪儿错了? 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 Is that___ backpack?No,my backpack is here.A.she B.hers C.your A backpack is under the chair.Under the chair_____ a backpack. This is a backpack in English（同上）划线部分：a backpack This is ablue backpack.(改错为否定句)This a blue backpack.咋填 your backpack is very nice .I wantmy mother to buy ____.A.one B.this C.it D.that Is that a backpack?否定回答时一定要用No it isn't么?能用No it This is a black backpack改为同义句 this is a blue backpack改为一般疑问句 This is a blue backpack改为同义句 This is a backpack(改为复数句子)怎么改?