◎ 题干
They discussed and discussed until a lot of people _____.  
[     ]
A. joined in    
B. joined      
C. took part in    
D. attended
◎ 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“They discussed and discussed until a lot of people _____.[ ]A. joined in B. joined C. took part inD. attended…”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。