-- The cars give off a great deal of waste gas in the streets.
--- Yes. But I’m sure something will be done to ___ air pollution.
| A．reduce | B．remove | C．drop | D．warn |
Chairman Mao to be unforgettable in the hearts of the Chinese people.
| A．proved | B．regarded |
| C．thought | D．considered |
At first,he doubted my honesty but at last he .
| A．smooths away it | B．smooths it away |
| C．smoothed it away | D．smoothed away it |
We him on his birthday and held a party to it.
| A．congratulate;celebrate | B．celebrate;congratulate |
| C．congratulated;celebrated | D．congratulated;celebrate |
He office in 2000 and office a year later.
| A．takes;leaves | B．took;resigned |
| C．takes;left | D．resign;take |
As this is his first time to Beijing,he is where to go for a visit.
| A．unable for | B．sure about |
| C．uncertain about | D．uncertain for |