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          You shouldn’t keep a pet _______________ you have enough time to care for it. 
          A．ifB．unlessC．thoughD．when
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析: 句意：你不應(yīng)該養(yǎng)寵物，除非你有足夠時(shí)間照顧它。 if如果，unless除非，though盡管，when當(dāng)……時(shí)。養(yǎng)寵物的先決條件是有足夠的時(shí)間照顧它，故選B
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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