◎ 题干
— Mr Anderson should either keep the dog in the house or________?
— I'll have a word with him.He often listens.
[      ]
A. tie up  
B. to tie up  
C. tied up  
D. tying up
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— Mr Anderson should either keep the dog in the house or________?— I'll have a word with him.He often listens. [ ]A. tie upB. to tie upC. tied upD. tying…”主要考查了你对  【过去分词】  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。