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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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