◎ 题干
Luckily, _______ happened to be no one in the building when the terrible fire broke out.
[     ]
A. there
B. it
C. this
D. that
◎ 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“Luckily, _______ happened to be no one in the building when the terrible fire broke out.[ ]A. there B. it C. thisD. that…”主要考查了你对  【therebe句型】  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。