when I locked the door,I realized I ( ) my key at home.这里填 left 还是 had left ,或者二者均可为什么?
问题描述:
when I locked the door,I realized I ( ) my key at home.
这里填 left 还是 had left ,或者二者均可为什么?
答
had left
应为这一句明显有先后顺序
即先丢在家,再发现