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          It’s four o’clock in the afternoon. The boys __ in the pool.
          A．is swiming B．a(chǎn)re swimingC．a(chǎn)re swimmingD．is swimming
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          根據(jù)前文的內(nèi)容. It’s four o’clock in the afternoon，可知答案為C，表示現(xiàn)在進行時。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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