◎ 题干
_____ we got to the station, the train had left already.
[     ]
A. If
B. Unless
C. Since
D. When
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“_____ we got to the station, the train had left already. [ ]A. If B. Unless C. Since D. When …”主要考查了你对  【从属连词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。