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				49．A．knows         B．to  know        C．know           D．knew			【查看更多】
			


		
     
    


		
    
		
    題目列表(包括答案和解析)
    

		
		
    

    


    
	
    				
    
									
    

    Every boy and girl ________ it.
    

    [　　]
    


    

    

    A．know
    		


    B．knows
    		

    

    

    C．knew
    		


    D．to know
    		

    

    

    

			
    
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    If she        the answer to the question, she would tell you．
      
    A．knows           B．will know          C．have known          D．knew
    

			
    
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    You need ________ about some table manners.
    

    [　　]
    
    

    

    

    A．know
    		


    B．knew
    		


    C．knows
    		


    D．to know
    		

    

    

    

    

			
    
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    Tom seems ______what he is doing． 
      
    A．to know    B．knows    C．knowing   D．knew
    

			
    
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    The manager, like all his technicians, ________ how to operate the machine.
    

    [　　]
    

    A．knew　　B．know　　C．knows　　D．will know
    

    

			
    
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