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          —How often do I need to feed the fish?
          －They _______ food every day, or they will be hungry.
          A．must giveB．mustn’t giveC．mustn’t be give.D．must be given
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D

          試題分析：句意：——我需要多久喂一次魚(yú)？——必須每天給他們食物，否則，他們會(huì)餓的。must“必須”，mustn’t“禁止”。結(jié)合句意，是必須喂食物故排除BC兩項(xiàng)。主語(yǔ)They與謂語(yǔ)give之間是被動(dòng)關(guān)系，故選D。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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