That is her knife.（改为复数）

That is her knife.（改为复数） That is her knife.（改为复数） ____are___ ___ ____ . This is a box and that is a knife （改为复数句） that is her parent.(改为复数形式） Is that her video tape?（改为复数句子） That is her brother.(改为复数句) is that her toy改为复数句 Is that her pencil?改为复数句 My knife is over there.(改为复数句） Is this her knife变复数 Is this your knife 改为复数句子 This is a knife 改为复数