◎ 题干
Look at the factory! It _______ before I came here.
[     ]
A. is built
B. has built
C. was built
D. was building
◎ 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“Look at the factory! It _______ before I came here. [ ]A. is built B. has built C. was built D. was building …”主要考查了你对  【被动语态】【一般过去时】  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。