28.         are the days when teachers were looked down upon.

A．Gone

B．Go

C．To go

D．Going

27. All possible means         . However, nothing can        him dying of lung cancer.

A．has tried; stop

B．have been tried; keep

C．has been tried; prevent

D．have been tried; stop

26. He made a mistake, but then he corrected the situation          it goes worse.

A．until

B．when

C．before

D．as

25. We shall travel by night          by day even if the weather is not good.

A．as well

B．but also

C．as well as

D．also

24.          many developing countries, China is in great need of science and technology.

A．As

B．As with

C．Which is the case with

D．As like

23. ―Is coffee drunk in China?

 ―Yes, but not much. In actual fact, most Chinese people        tea.

A．plant

B．choose

C．prefer

D．pick

22. The old temple on top of the mountain caught fire last night. The police are now       the matter.

A．seeing through

B．working out

C．looking into

D．watching over

21.         great fun it is to have a swim on such a hot day on the beach!

A．What

B．What a

C．How

D．How a

20. ―How is everything going on with you in America?

―Quite well. Not so smoothly As I expected,        .

A．though

B．instead

C．either

D．too

19. His parents had thought it would be of great use for his characters to        from home and earn some money on his own.

A．run away

B．take away

C．keep away

D．get away