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—I have got a headache.
—No wonder. You __________ in front of that computer too long.
A.workB.are working
C.have been workingD.worked
. C。
由于在电脑前工作太久,所以导致了现在头痛的结果,故空格处应填现在完成时或现在完成进行时,即答案选C。
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