Jane is supposed to stop working. She has a serious headache because she all the morning .
A. wrote
B. is writing
C. had written
D. has been writing
网友回答
A. wrote
B. is writing
C. had written
(答案→)D. has been writing
解析：根据时间状语可知，整个早上Jane都一直写作，用现在完成进行时，表示从过去某时开始，一直延续到说话时刻，可能刚刚结束的动作。