— They have discussed the problem for hours.
— Have they e to any ?
A. end
B. result
C. opinion
D. conclusion
网友回答
A. end
B. result
C. opinion
(答案→)D. conclusion
解析：考查名词：A. end结束B. result 结果C. opinion 观点D. conclusion总结，e to an end结束，句意：――他们已经讨论了好几个小时了。――他们结束了吗？选Ｄ。