翻译题
63.Last night's TV news said that by then the death of the missing people ______(未证实)yet. (prove)
【正确答案】had not been proved
【答案解析】“the death of the missing people”和“prove”是动宾关系，应该用被动语态，句子是过去时态，由by then可知这里应该用过去完成时。句意：据昨晚的新闻报道，截止到那时候，失踪人员的死亡情况还未得到证实。