Extra warmth from sunlight can put an additional ________on the air-conditioning system.
| A．weight |
| B．anxiety |
| C．load |
| D．tiredness |
____ knowledge is better than ___ wealth.
| A．The…the | B．A…the | C．The…a | D．/…./ |
I enjoy living in ___ room, ___ window of which opens to ___ south.
| A．a.. the..a | B．a..the..the | C．the…a …the | D．the…the…a |
It’s ___ time that he has failed in the experiment.However, he has made up his mind to try ___ time next week.
| A．the first…a second | B．a first.. the second | C．for the first.. second | D．the first..second |
____ lies in North America.
| A．The United State | B．The United States | C．United States | D．A United State |
He has thrown away his old shoes.He’ll have to buy ____.
| A．a new one | B．a new pair | C．some new pair | D．a new shoes |