Sorry,I can't open the door,for I ( ) the key to it.是填 lost 还是填 have lost 为什么?

Sorry,I can't open the door,for I ( ) the key to it.是填 lost 还是填 have lost 为什么?
Sorry,I can't open the door,for I ( ) the key to it.
是填 lost 还是填 have lost 为什么?

Sorry,I can't open the door,for I ( ) the key to it.是填 lost 还是填 have lost 为什么?
have lost 跟现在有关系,用have lost had lost是在过去的某时间点达到了某件事 D Blose D

have lost钥匙已经掉了，

lost 因为一般过去时表示过去发生的事情