◎ 题干
—Excuse me, does Mr Smith's son live here?
—He _____ be here, but he has moved.
[     ]
A. has to
B. used to
C. tried to
D. happened to
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—Excuse me, does Mr Smith's son live here?—He _____ be here, but he has moved.[ ]A. has to B. used to C. tried to D. happened to…”主要考查了你对  【动词短语】  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。