组卷网 > 初中英语综合库 > 语法 > 冠词 > 不定冠词 > a/an的区别
题型:单项选择 难度:0.65 引用次数:97 题号:5126322
— This is _________ useful dictionary, I think.
— So it is, and it’s _________unusual one.
A.the/ aB.a /anC.a/aD.不填/ an
【知识点】 a/an的区别解读

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