a bad habit is formed, it will take a long time to get rid of it．
| A．Ever since | B．While | C．Once | D．Even if |
.
The former Olympic champion was________in the quarterfinals last night when he lost 0-2 at home.
| A．knocked off | B．knocked out | C．knocked down | D．knocked over |
.
The workers agreed to________ the strike if the company would satisfy their demands.
| A．call for | B．call in | C．call off | D．call up |
.
Wage increases to a certain level help to________ the average consumers fro the effects of higher prices.
| A．cushion | B．reduce | C．prevent | D．remove |
.
These articles________the problems of the modem world, including race relations and community development.
| A．address | B．avoid | C．create | D．correct |
.
Urban crowdedness would be greatly relieved if fares________on public transport were more reasonable.
| A．offered | B．spent | C．paid | D．charged |