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				4．--It must be  John who is in the office．--I'm sure it           be John．I saw him off  at the railway station just twenty minutes ago．A．won't         B．mustn't        C．can't        D．needn't			【查看更多】
			


		
           
          


		
          
		
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          --It must be John who is in the office．
            
          --I'm sure it ________ be John．I saw him off at the railway station just twenty minutes ago．
            
          A．won't         B．mustn't           C．can't         D．needn't
          

			
          
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          －It must be John who is in the office．
          

          －I'm sure it ________ be John．I saw him off at the railway station just twenty minutes ago．
          

          

          [　　]
          

          A．won't
          

          

          B．mustn't
          

          

          C．can't
          

          

          D．needn't
          

          

          

			
          
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