—I have got a headache.—No wonder. You in front of that computer too long. A. workB. are

问题补充：

—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：

A. work

B. are working

C. have been working

D. worked

解析：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。