◎ 题干
We had         exam yesterday. I spent          hour on it.
[     ]
A . a;a                          
B. a;an                    
C. an;a                        
D. an;an
◎ 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 had exam yesterday. I spenthour on it.[ ]A . a;aB. a;an C. an;aD. an;an…”主要考查了你对  【不定冠词(a,an)】  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。