◎ 题干
— I went to Tom's birthday party last night. A lot of my good friends were there too.  
— It ________ fun.   
[      ]
A. must be      
B. can be    
C. must have been      
D. can have been
◎ 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“— I went to Tom's birthday party last night. A lot of my good friends were there too.— It ________ fun.[ ]A. must beB. can beC. must have beenD. can have…”主要考查了你对  【情态动词】【现在完成时】  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。