---I have got a headache．
----No wonder ．You in front of that puter too long ．
A. work
B. are working
C. have been working
D. worked
网友回答
A. work
B. are working
(答案→)C. have been working
D. worked
解析：考察时态。句意：我头疼。——不足为奇。你在电脑前工作的太久了。可知叙述的是已经完成的一直在进行的动作，故用完成进行时，选C。