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        填入所缺單詞完成句子。 Many years ago people didn't travel
        
            
        
    
        

信息發(fā)布者：香草
        

        

        
 

        

        

填入所缺單詞完成句子。
        
      Many years ago people didn't travel by ______________. They didn't travel by ______________.
        
They didn't travel by ______________.
        

        
參考答案：
        
bike, plane, train
        
答案不唯一
        



        

        

        


        

        

        


        

        

        

        


        

        






        

        
        		

        

        




        


        


        



        
        

    
        

                    
        


    
        
    
        
        
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