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           — Why does the boy keep crying?
          — It is ______ he has lost his favorite car model.
          A．since B．so C．whenD．because
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D

          試題分析：考查連詞：A. since自從，B. so所以，C. when當(dāng),…時(shí)候，D. because因?yàn)�，句意：為什么這些男孩一直在哭？--是因?yàn)樗チ俗钕矚g的汽車(chē)模型。Because引導(dǎo)表語(yǔ)從句，回答why的問(wèn)題。選D。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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