◎ 题干
Up to now, the two countries          for five years.    
[     ]

A. have been in conflict    
B. have come into conflict    
C. came into conflict    
D. are in conflict

◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Up to now, the two countriesfor five years. [ ]A. have been in conflict B. have come into conflict C. came into conflict D. are in conflict…”主要考查了你对  【动词短语】【现在完成时】  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。