those aren't keys单数形式

those aren't keys单数形式 Those aren't keys.改为单数句子 those aren't my cousins改为单数形式 帮我改下英语单数句子Those aren't keys. Those aren't Chinese buses.改成单数 Those aren’t ID cards 改为单数 怎么把Are those your keys改为单数形式? No, they aren't.改为单数形式 Those aren't any oranges.（改单数句） 1-Are those your sons?(改为单数形式） 2-Are those his keys?(改为单数形式） Are those her keys?yes,they are.\No,they aren't.they're mine they aren't orange oranges.改为单数形式