◎ 题干
—Hey, it's raining!    
—Yes, it _____ for about 3 days.    

A. is rained
B. rains
C. has been raining
D. rained
◎ 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“—Hey, it's raining ! —Yes, it _____ for about 3 days. [ ]A. is rainedB. rainsC. has been rainingD. rained…”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。