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. worked
D. have been working
答案
答案：D
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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. worked
D. have been working
答案：D