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    I am not sure he will come here. he comes here, please let me know. A. that ; When B. that; If C. if; Whether D. whether; When 【查看更多】

     

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    I am not sure _____ he will come here. ______ he comes here, please let me know.      
    [     ]
    A. that, When  
    B. that, If      
    C. if, Whether    
    D. whether, When

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