they are my keys变一般疑问句

网友回答

–Are those your keys?这是你的钥匙吗?
-No,they aren't.不,不是.
或是——如果指这是自己的钥匙吗,your 改为 my.否定回答扩展开是：
–No,those keys aren't mine/those aren't my keys.