◎ 题干
Most old city walls were _____ down at that time because they were worn _____.        
[     ]
A. pulled; off
B. pushed; out
C. pushed; off
D. pulled; out
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Most old city walls were_____ down at that time because they were worn _____.[ ]A. pulled; offB. pushed; outC. pushed; offD. pulled; out…”主要考查了你对  【实义动词】【介词】  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。