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—Do you know where Mary is?
—No, I don’t. I ______ her since last Sunday night.
A.haven’t seenB.didn’t seeC.won’t seeD.don’t see
A

试题分析:考察时态。本题中的关键词是since last Sunday night,since引导的时间状语都是和现在完成时连用的。句意:—你知道Mary在哪里吗?—我不知道,自从上星期天晚上到现在我都没有看见她。故A正确。
点评:时态题的考查关键是抓住句子的上下文含义和句中的时间状语。要根据时间状语来选择合适的时态,在平时的学习中要注意积累有关时态的用法和各种时态的特殊之处。如since, so far等经常与现在完成时连用。在条件状语从句中用一般现在时代替将来时等等。
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