◎ 题干
— I have got a headache.
— No wonder. You _____ in front of that computer too long.

[     ]

A. work
B. are working
C. have been working
D. worked
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“— Didyouseeit? — __________.[ ]A.Yes,IwasB.No,IdidC.No,Ididn'tD.Yes,Ido…”主要考查了你对  【现在完成进行时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。