―Kate doesn’t look very well. What’s wrong with her? ―She has a headache because

 ―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

试题答案

A 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。