4. Father _____ for London on business upon my arrival,　 so I didn’t see him.

　 A. has left　　　　　 B. left　　　　　　 C. was leaving　　 D. had left

3. They _____ on the program for almost one week before I joined them, and now we _____ on it as no god results have come out so far.

　 A. had been working; are still working　　　 B. had worked; were still working

　 C. have been working; have worked　　　　 D. have worked; are still working

2. The hero’s story _____ differently in the newspapers.

　 A. was reported　　　 B. was reporting　　 C. reports　　　　 D. reported

1. – If the traffic hadn’t been so heavy, I could have been back by 6 o’clock.

-- What a pity! Tina _____ here to see you.

　 A. is　　　　　　　 B. was　　　　　　 C. would be　　　 D. has been

18.　 地球一度被人们认为是平的。

17.　 那个人可能被认为携带武器。

16.　 茶不能用来服药。

15.　 他们在刷车。

14.　 在这件事上，我和你的想法一样。

13.　 他手里的小刀和我丢的一模一样。