It is a backpack... __ __ ___ ___[变为一般疑问句】

It is my backpack _your backpack It is in the backpack? It is in the backpack? ________________?(your,backpack) yes,it is . It is his backpack改否定句 Not ,is ,my,it,backpack(連詞成句) it is anold backpack的复数形式 That is a backpack in English .(划线提问)提问backpack 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? 这是一个双肩背包吗?的英语Is it a backpack?这样写对吗? It is a backpack... __ __ ___ ___[变为一般疑问句】 ()（）an English It's a backpack Where is my backpack?I can‘t find it.is it （）the table?A.of B.under C.at it is my backpack(改为否定句) it（ ）my backpack. 英语 改复数句This is a pen.Is this your backpack?It's a black bag Is that a backpack?否定回答时一定要用No it isn't么?能用No it