问题补充：
―Kate doesn’t look very well. What’s wrong with her?
―She has a headache because she too long; She ought to stop work.
A. has been reading
B. had read
C. is reading
D. was reading
答案：
(答案→)A. has been reading
B. had read
C. is reading
D. was reading
解析：has been reading为现在完成进行时，表示一个动作从过去开始一直进行到现在。
