A. valid B. vain C. vacant D. vague

4. Traffic lights are used to __________ traffic

A. adjust B. arrange C. command D. regulate

5. In a way it was a(n) __________ to know exactly what we were up against.

A. effect B. means C. relief D. suggestion

6．He determined to the great cause of communism.

A. live a happy life B. come to life

C. give life to D. give his own life to

7. He suddenly saw Sue _____ the room. He pushed his way _____ the crowd of people to get

to her.A．across; across B．over; through C．over; into D．across; through

总结反刍:

_