It was________great shock to the world that two aero-planes crashed into ______World Trade Center in New York o September 11th, 2001.
| A．a; / | B．a; the | C．the; the | D．/; the |
How beautifully she sang! I have never heard _______ song.
| A．the better | B．a better | C．the best | D．a best |
Mr. Green, who is a member of Labor Party, has _____ Mr Brown as President.
| A．taken place | B．taken the place | C．in place of | D．replaced |
Patience is an important ____ of a happy and rewarding life. After all, some things are worth waiting for.
| A．lesson | B．experience | C．purpose | D．quality |
— What about the price of petrol now?
— It has been ______ 20 percent since the beginning of this year.
| A．increased to | B．risen by | C．increased by | D．risen to |
The old man was taking a walk, ____ by his grandson.
| A．supporting | B．supported |
| C．being supported | D．having supported |