◎ 题干
It took me _____to find out the key to the drawer.
    
[     ]
A. one and half hours    
B. one and a half hours
C.  one and a half hour    
D. one and half hour
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“It took me _____to find out the key to the drawer.[ ]A. one and half hoursB. one and a half hoursC. one and a half hourD. one and half hour…”主要考查了你对  【可数名词(单数名词,复数名词)】【不定冠词(a,an)】【基数词】【并列连词】  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。