The spokesman didn’t make clear why the president failed to attend the conference.
A．this. B．that. C．it. D．what.
One may never know the of knowledge without being educated.
A．power. B．force. C．energy. D．strength.
This is the first time we a film in the cinema together as a family
I mention it I feel very happy.
A．see; time B．had seen; for the time
C．saw; the time. D．have seen; the time.
Tom’s pay depends on the factory.
A．he plays in what part. B．he plays what part in.
C．what part he plays in. D．in what part he plays.
The government has taken some measures to solve the shortage of water, but it may be some time __ the situation improves.
A．since B．when. C．unless. D．before.
After driving for thirty miles. he suddenly realized that he in the wrong direction.
A．had been driving. B．had been driven.
C．has been driving. D．was driven.
