--- 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. had had 查看更多

 

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— 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

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