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          All communication has to be open, honest, and patient if a happy and healthy relationship _____.

          A. will maintain 
          B. is maintaining 
          C. are maintained
          D. is to be maintained 
          			
          

			
          
				
          
		
		
	
          
		
          
			
          
				
          
				D				
          
			
          
			
          
				
          
			
          
			
          
				
          
			
          
			
          
				
          
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				相關(guān)習(xí)題
			
          	
						
          
			
          
				科目：高中英語(yǔ)
				來(lái)源：湖南省模擬題
				題型：單選題
			
          
									
          All communication has to be open, honest, and patient if a happy and healthy relationship _____.
          

          [     ]
          A. will maintain 
          B. is maintaining 
          C. are maintained
          D. is to be maintained 
          

			
          
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