◎ 题干
单项选择。
"Hello, who's ___?" "Hello, ___ is Mary speaking."
[     ]
A. this; that    
B. that; this    
C. this; this    
D. that; that
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“单项选择。"Hello, who's ___?" "Hello, ___ is Mary speaking." [ ]A. this; that B. that; this C. this; this D. that; that …”主要考查了你对  【日常用语、谚语】【指示代词】  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。