No one ______ be more generous; he has a heart of gold.
| A．dare | B．must | C．could | D．need |
The lecture, ______ at 7:00 pm last night, was followed by an observation of the moon with telescopes.
| A．starting |
| B．being starting |
| C．to start |
| D．to be started |
Marco Polo is said to have sailed on ______ Pacific Ocean on his way to Java in ______ thirteenth century.
| A．the; a |
| B．a;/ |
| C．/; the |
| D．the; the |
The other scientists ______ to her ideas with a mixture of criticism and silence.
| A．agreed |
| B．reacted |
| C．approved |
| D．commented |
The country itself didn't have enough gas because of the war，so the government decided to ________ its gas supplies to other countries.
| A．hide away |
| B．cut off |
| C．insist on |
| D．break up |
The students all wear the same uniform, so it’s hard for me to ______ my son among them.
| A．bring out |
| B．pick out |
| C．pick up |
| D．bring up |