Every possible means __________ to prevent the air pollution, but the sky is still not clear.
| A．is used | B．are used |
| C．has been used | D．have been used |
There were so many people in the street watching the fire that the firefighters could not get _____ to the building on fire as soon as possible.
| A．closely |
| B．close |
| C．around |
| D．in |
Her face went red _____ he had said.
| A．because that |
| B．because what |
| C．because of what |
| D．because |
The teacher asked an easy question, but not a proper answer _____.
| A．came up |
| B．keep up |
| C．catch up |
| D．was come up |
When Li Ming got to America, he found his English was quite different _____ he had learned in China.
| A．from which |
| B．of that |
| C．from what |
| D．from the one |
He promised to _____ me with a beautiful gift.
| A．give |
| B．present |
| C．offer |
| D．buy |