–Why, David, you look so tired!
–Well, I a report for the whole day and I must finish it tomorrow.
A. was writing
B. will be writing
C. have written
D. have been writing
网友回答
A. was writing
B. will be writing
C. have written
(答案→)D. have been writing
解析：考察时态。根据句中时间状语for the whole day可知与现在完成进行时连用。结合句意：我整天都在写报告。我每天一定会完成。