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                That.s one of those questions that ________. 
A.needn.t to be answered
B.needn.t to answer
C.needn.t be answered
D.needn.t answer
                    
                    
                    
                
                
                
            
        A.needn.t to be answered
B.needn.t to answer
C.needn.t be answered
D.needn.t answer
参考答案
 
                