◎ 题干
We live day by day, but in the great things, the time of days and weeks____ so small that a day
is unimportant.      
[     ]
A. is            
B. are          
C. has been    
D. have been
◎ 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“We live day by day, but in the great things, the time of days and weeks____ so small that a dayis unimportant.[ ]A. is B. are C. has beenD. have been…”主要考查了你对  【一般现在时】【主谓一致】  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。