broke down
broke out
broke up
broke in
单选题The computer system（）suddenly while he was searching for information on the Internet.A broke downB broke outC broke upD broke in
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单选题The screen of my computer went（）suddenly.A backB blankC emptyD nothing
单选题When he suddenly（） up the subject of genetic engineering, there was an embarrassed silence.A tookB broughtC showedD came
单选题The police ______ the murderer everywhere when he suddenly appeared in a theatre.A is searching forB are searching forC were searching forD was searching for
单选题After driving for twenty miles, he suddenly realized that he has been driving in the wrong direction.A drivingB realizedC has been drivingD the wrong
单选题______ , he finds the work interesting.A Though he is computer expertB A computer expert he isC As computer expertD Computer expert as he is
单选题I suddenly realized that he was trying to______quarrelling with me.A considerB enjoyC avoidD prevent
