28. Mary_____ to college last year. Unluckily, she couldn’t take the examination because of a sudden disease.

　 A must have gone　 B can have gone　　 C should have gone　　 D could have gone

27. Look! There is a whole crowd of people over there. Go and see what_____ and if it is a bargain, buy it.

　 A is selling　　 B is being sold　　 C has been selling　　 D has been sold

26. ---- Father, why do you always make me do exercise every morning?

　 -----_______ good health.

　 A Gain　　 B Gaining　 C To gain　　 D Having gained

25. With a series of strange phenomena_____ , people living in the small village began to suspect that the earthquake was coming.

　 A to happen　　 B happening　　 C happened　　 D being happened

24. ---- Isn’t it a surprise that I happened to meet Francis Mathews at the Christmas party last week、

　 ----- If my memory serves me correctly, you _____ each other for exactly two years.

　 A hadn’t seen　　 B haven’t seen　　 C didn’t see　　 D don’t see

23. ---- You shouldn’t have played such a joke on him.

　 ---- Sorry, I _____ that he would get so angry.

　 A don’t expect　　 B hasn’t expected　　 C didn’t expect　 D hadn’t expected

22. ---- We want someone to design the new art museum for us.

　 --- _______ the young fellow have a try.

　 A May　　　 B Shall　　 C Will　　 D Need

21. The bank is reported in the local newspaper_____ in broad daylight yesterday.

　 A being robbed　　 B having been robbed　 C to have been robbed　 D robbed

20. You are still here? I ____ you _____ Beijing.

　 A think, are leaving for　　 B think, have already left for　

　 C thought, would soon leave for　　 D thought, had already left for

19. _____ 500g of honey, a single bee would have to make about 10 million trips from the hive to the flower and back again.

　 A Producing　　 B To produce　　 C Being produced　　 D Having produced