问题
选择题
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
答案
答案：D
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。