it is my backpack(改为否定句) it（ ）my backpack.

it is my backpack(改为否定句) it（ ）my backpack. 把It's my backpack.改为否定句 It is my backpack _your backpack This is my pencil.（改为复数句） It's his backpack.（改为复数句） It's my backpack.改为复数形式 It is his backpack改否定句 This is my backpack改为同义句 not,is,my,it,backpack 连词成句 Not ,is ,my,it,backpack(連詞成句) It's my backpack.对my backpack提问 My english book is in the backpack 改否定句 Is ____ your backpack No,it isn't .My backpack is big.That o