8.The students______busily when Miss Brown went to get a book she______in the office.

A.had written;left　　　　　　　　　　　　　　　　　　　　　　 B.were writing;has left

C.had written;had left　　　　　　　　　　　　　　　　　　　 D.were writing;had left

7.Bt the time he was twelve,Edison ______ to make a living by himself.

A.would begin　　　　　　　　　　 B.has begun　　　　　　　　　 C.had begun　　　　　　　　 D.began

6.It was obviously that the man ______ driving on the free way for almost an hour when he ______ that he must come back.

A.was;was told　　　　　　　 B.had been;was told　　　 C.had been;told　　　　　　 D.was;was told

5.When they went to the theatre,the play ______ for five minutes.

A.had begun　　　　　　　　 B.has begun　　　　　　　　　 C.had been on　　　　　　　 D.was on

4.-Were they good to you during your stay there?

-Sure.I ______ one of the family there.

A.was treated as　　　　　　　　　　　　　　　　　　　　　　　 B.were treated like

C.had been looked on like　　　　　　　　　　　　　　　　 D.had been considered as

3.The police found that the house______ and a lot of things ______.

A.has broken into;been stolen　　　　　　　　　　　　　　　　　 B.had broken into;been stolen

C.has been broken into;stolen　　　　　　　　　　　　　　　　　 D.had been broken into;stolen

2.Hardly______ ourselves in the theatre when the curtain ______ up.

A.had we seated;went　　　　　　　　　　　　　　　　　　　 B.we had seated;went

C.seated;had gone　　　　　　　　　　　　　　　　　　　　　　 D.did we seated;went

[过去完成时]

1.Alice had to wait outside of her house because she ______ her keys in her office until her husband ______.

A.left;returned　　　　　　　　　　　　　　　　　　　　　　　　　　　　 B.has left;will return

C.had left;would return　　　　　　　　　　　　　　　　　　 D.had left;returned

5.有一种可能，那就是这位老太太可能是被闪电击中而死的。(There is the possibility that...)

4.你是我所见到的最善良的人。