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          Go downstairs,        stand in line on the playground as soon as possible.
          A．a(chǎn)ndB．butC．soD．or
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A
          and和,并且;but但是,可是;so因此;or或者,否則.句意:下樓,盡快地在操場上站成一對.結(jié)合語境可知下文可知前后是順接關(guān)系,故選A.
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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