语法与词汇 More than half of those committing murder and violent assaults_____ alcohol immediately before the crime.
【正确答案】 B
【答案解析】句意：大部分杀人犯和斗殴的人在犯事前都喝了酒。本题主语是more than half of those，故答案为B，用现在完成时的主动语态。