-I have got a headache.-No,wonder.You _____ in front of that computer too long.选择如下:A.work B.are working C.have been working D.worked

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-Ihavegotaheadache.-No,wonder.You_____infrontofthatcomputertoolong.选择如下:A.workB.areworkingC.havebeen

-I have got a headache.-No,wonder.You _____ in front of that computer too long.选择如下:A.work B.are working C.have been working D.worked
-I have got a headache.-No,wonder.You _____ in front of that computer too long.选择如下:
A.work B.are working C.have been working D.worked

-I have got a headache.-No,wonder.You _____ in front of that computer too long.选择如下:A.work B.are working C.have been working D.worked
C have been working
表示一个动作一直持续,现在仍在进行,用现在完成进行时

C 表示一直的意思