Jessica ought to stop work.She has a headache because she too long.A. readB. is readingC

问题补充：

Jessica ought to stop work.She has a headache because she too long.

A. read

B. is reading

C. had read

D. has been reading

答案：

A. read

B. is reading

C. had read

(答案→)D. has been reading

解析：本题考查时态。从语境看，说明读了很长时间，所以应用现在完成进行时，强调动作对现在造成的结果。