◎ 题干
The government has taken some measures to solve the shortage of electricity, but it may be some time ________ the situation improves.
[     ]
A. since        
B. before     
C. unless       
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“The government has taken some measures to solve the shortage of electricity, but it may be some time ________ the situation improves.[ ]A. sinceB. before C. …”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。