6.The committee ______ a conclusion only after days of discussion.
A.achieved
B.reached reached a conclusion:得出结论
C.arrived
D.completed
7.She asked that the letter be ______ in order that the contents should remain a secret.
A.eliminated
B.ruined
C.destroyed
D.spoiled
8.A dog was ______ by a bus and killed.
A.run over
B.taken over
C.felled down
D.tripped up
9.He was standing by an electric heater,and his nightdress ______ fire.
A.took
B.caught
C.started
D.set
10.In spite of the thunderstorm,the children slept ______ all night.
A.noisily
B.sensitively
C.soundly
D.quickly
6.答案：B。
reached a conclusion:得出结论。不能选arrived，但可用arrived at。achieve一般作“达到(目的)，取得(胜利)”。complete为“完成”，后接任务，工作等。
7.答案：C。
the letter be destroyed:把信毁掉。不能选B，ruin是“使毁灭，毁坏”，后常接hope,crop等。eliminate作“排除;消灭”。spoil是“损坏，糟蹋;搞糟”。
8.答案：A。
run over:撞倒并碾过。take over为“接收”。fell down作“砍倒”。trip up作“绊倒”。
9.答案：B。
caught fire:着火。不能选D，set fire是“放火”。start a fire则为“点火，引火。
10.答案：C。
slept soundly:睡得香。不能选D，sleep是“睡，睡眠”，是一种状态，不能说quickly sleep。noisily作吵闹的”。sensitively为“敏感地”。
