—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
—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
. 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。