◎ 题干
The prices _________ up all the time and no one knows when it will become stable.
[     ]
A. had gone    
B. have been going  
C. have gone    
D. had been going
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“The prices _________ up all the time and no one knows when it will become stable. [ ]A. had gone B. have been goingC. have gone D. had been going…”主要考查了你对  【现在完成进行时】  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。