问题补充:
— How long has your brother been working in this factory?
— he graduated from college.
A. When
B. By the time
C. Until
D. Ever since
答案:
A. When
B. By the time
C. Until
(答案→)D. Ever since
解析:考查连词辨析。A当…时;B到…时为止(与完成时连用);until直到…才…;ever since自从…;句意:—你的兄弟在这个工厂里工作了多久了?—自从她大学毕业到现在一直都在这个工厂里工作。故D正确。