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          It was very windy and cold, _____ they were still working hard in the field.
          A. as         B. till           C. but          
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C

          試題分析： as因為，隨著，雖然，當(dāng)……時，till直到……為止，but但是，而是，然后。根據(jù)句意：天刮著大風(fēng)還很寒冷，他們卻一直在地里努力地工作�？芍@里需要一個表示轉(zhuǎn)折的連詞。故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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