◎ 题干
— What did the doctor say about your mother's illness?  
— He suggested that she   _     an operation at once.    
[      ]
A. must have    
B. had      
C. have        
D. has
◎ 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“— What did the doctor say about your mother's illness?— He suggested that she _ an operation at once. [ ]A. must have B. had C. have D. has…”主要考查了你对  【虚拟语气】  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。