题目内容
Mr. Li was out of touch last week. The police ________ for him since.
A. have been searching B. were searching
C. had searched D. has searched
A
【解析】
试题分析:考查时态。根据句中的时间状语since = since last week可知,用现在完成进行时,表示此动作从过去一直就开始,并持续到现在。句意:李先生上个周失去了联系,自从那时起警察就一直在寻找他。故A正确。
考点:考查时态
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