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          The engineers are so busy that they have no time for outdoor sports activities，________ they have the interest.
          A．whereverB．whenever
          C．even ifD．a(chǎn)s if
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          解析　句意為：工程師們都很忙，以致于他們沒有時間去做戶外運動，即使他們有興趣。even if即使，符合句意。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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