问题
选择题
— 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
答案：C
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— 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：C