Ⅰ、1、left
2、shower
3、overslept
4、realized
5、lift

Ⅱ、7 - 6 - 2 - 8 - 3 - 1 - 4 - 9 - 5

Ⅲ、A. 1、By the time Jenny arrived at the office, had left the key at home
2、By the true John found his umbrella, had already stopped
3、By the time they got married, had known each other
B. 4、know the news, Before Susan sent me the e-mail, I had already known
the news.
5、go back to London, Before I got a chance to say"sorry", Mr. Stoker had
gone back to London.
6、find the tickets, Before we got to the cinema, my mother had found the tickets.