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          (期末高頻題)Today the forests are disappearing．We must ________ down too many trees．
          

          

          [　　]
          

          A．

          prevent people to cut
          

          

          B．

          prevent people from cutting
          

          

          C．

          prevent people for cutting
          

          

          D．

          prevent people at cutting
          

          

          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				答案：B
          解析：
          		

          固定短語prevent sb．from doing“阻止某人做。”
          


          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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          (期末高頻題)We are never _______ old _______ learn．

          1. A.
            too, too
          2. B.
            to, to
          3. C.
            too, to
          4. D.
            to, too
          

			
          

			
          
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