◎ 题干
-I think the man over there must be Bob.    
-It _________be him. He has __________to Australia.    
[     ]
A.can't, gone    
B.can't; been    
C.may not; been    
D.mustn't; gone
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—I think the man over there must be Bob. —It _____ be him. He has _____ to Australia. [ ]A. can't, goneB. can't, been C. may not, been D. mustn't, gone…”主要考查了你对  【实义动词的过去分词】【情态动词】  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。