16. The stranger who knocked me down said, "I'm terribly sorry. I      you."

A. don't see     B. hadn't seen

C. am not seeing    D. wasn't seeing

15. ―Mary broke up with me ！

^You    have forgotten about the Valentine's Day.

A. shouldn't    B. couldn't

C.   needn't   D. mustn't

14. The movie originally     for children under 12 is now being used to educate adults.

A. intended         B.   being intended

C. to be intended    D.  having been intended

13. Martin hasn't got in touch with me for ages. He     my new cellphone number.

A. can't get        B.  mustn't get

C. can't have got       D.   shouldn't have got

12. Nowadays people separate their waste to make it easier for it    .

A. to reuse      B.  to be reused   

C. reused    D. reusing

11. ―We all had a lot of fun at the barbecue yesterday. Pity you weren't there.

―I really should have gone with you, but I    on some remaining problems.

A. was working      B.   would work

C. worked       D.  had worked

10. —What's that noise, John?

—Oh, don't you know that the school library    ？

A. is rebuilt       B.  is being rebuilt

C. was rebuilt      D.  has been rebuilt

9. Since Jack was laid off from his job three months ago, he    a new one, but without luck.

A. looked for     B.  had looked for

C. is looking for  D.   has been looking for

8. The dinner party was a success, but we thought it was a pity not    you.

A. invite     B.  to invite

C. inviting   D.  to have invited

7. ―Mr Smith is said to have retired and he is living in the country now.

一Yes. He     in our factory for 35 years ！ What a good worker ！

A. had been working   B.   had worked

C.  worked         D.  have worked