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          —I’m afraid that I can’t do it.
          —Oh, you should believe in yourself. You won’t know what you can do______ you try it.
          A．ifB．becauseC．untilD．while
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          考查連詞. if 是否,如果;because因?yàn)?until直到;while然而,當(dāng)……時(shí)；句意：我擔(dān)心我做不到�！叮銘�(yīng)該相信自己。直到你嘗試過(guò)后，你才能直到自己能做什么。固定結(jié)構(gòu)not…until直到...才，故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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