—Theyaresupposedtoarriveatsix,butthereisnosignofthem.—S... 国语站 题库 9.04K 大中小设置文字大小 问题详情:—They are supposed to arrive at six, but there is no sign of them.—Something unexpected to them.A.might happen B.must have happenedC.would have happened D.could happen【回答】B知识点:虚拟语气题型:选择题 TAG标签:#