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				25．-We had better ask Bob to help us.    ▲   he is away  on business.A. So   B. And   C. Or   D. But			【查看更多】
			


		
           
          


		
          
		
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          We had better ask Bob to help us. _______ he is away on business. 
          

          [     ]
          A. So
           B. And 
          C. Or 
          D. But 
          

			
          
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          －We had better ask Bob to help us．
          

          －________ he is away on business．
          

          

          [　　]
          

          A．So
          

          

          B．And
          

          

          C．Or
          

          

          D．But
          

          

          

			
          
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