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           —Linda, together with her parents, ______up the mess in the park at the moment.
          —It’s meaningful to be a volunteer. Let’s join them.
          A．is cleaningB．a(chǎn)re cleaningC．has cleanedD．have cleaned
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A
          此題考查主謂一致問題，her parents 是從屬結(jié)構(gòu)，真正的主語是Linda，故謂語動詞用單數(shù)。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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