【题目】—Mum, Dad ought to stop working?
—Yes, he has a bad headache because he _______ too long.
A. read B. has been reading
C. had read D. is reading
在线课程【答案】B
【解析】
试题分析：考察现在完成进行时。现在完成进行时表示从过去某时开始一直持续到现在，并且还将持续下去。结构为have/has+ been+动词的现在分词。句意：上文：妈妈，爸爸应该停止工作了吗？下文：他由于一直读书时间过长而头疼。故选B。