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				A.to require B.required   C.requiring   D.are required			【查看更多】
			


		
     
    


		
    
		
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    Textbooks___to come in time.   
    

    [     ]
    A. require    
    B. are required   
    C. required    
    D. are requiring
    

			
    
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    Text books ________ to come out in time.
    

    [　　]
    

    

    A．require
    B．required
    

    C．a(chǎn)re required
    D．a(chǎn)re requiring
    

    

    

    

			
    
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    Text books ________ to come out in time.
    

    [　　]
    

    

    A．require
    B．required
    

    C．a(chǎn)re required
    D．a(chǎn)re requiring
    

    

    

    

			
    
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    At the entrance all passengers _____ to show their tickets.
      
    A. required       B. are required       C. require        D. are requiring
    

			
    
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    從所給的四個選項中選擇最佳答案
    

    Text books ______ to come in time．　　　
    [　　]
    

    A．require　　　B．required　　　C．are required　　　D．are requiring
     

    

			
    
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