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You must do your homework now; you ________ computer games all the evening.
A.have been playingB.are playing
C.playD.played
A

试题分析:考查时态。本题关键词在于all the evening整个晚上;通常与现在完成进行时连用,句意:你现在必须得做家庭作业了,你整个晚上都一直在玩电脑游戏。故A正确。
考点:
点评:时态考查关键要看时间状语。本题的关键是在all the evening,该短语常与现在完成进行时连用。
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