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— I have got a backache.
— That’s not surprising. You ______ in front of that computer too long.
A.workB.workedC.have been workingD.are working
C

试题分析:考查时态。句意:—我后背疼。—这不令人奇怪。你在电脑前面工作的时间太长了。根据句意可知你在过去一直时间一直都坐在电脑前面,对现在产生的影响就是你的后背疼痛,故使用现在完成时或者现在完成进行时。故C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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