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				18．---Who is singing in the room?  ---        must be Mary．  A．This  B．She  C．He  D．It			【查看更多】
			


		
           
          


		
          
		
          題目列表(包括答案和解析)
          

		
		
          

          


          
	
          				
          
									
          

          －Who is singing in the next room?
          

          －________ must be Mary．
          

          

          [　　]
          

          A．She
          

          

          B．This
          

          

          C．It
          

          

          D．He
          

          

          

			
          
				查看答案和解析>>
			
          
		
          
				
          
									
          

          －Who is singing in the next room?
          

          －________ must be Mary．
          

          

          [　　]
          

          A．She
          

          

          B．This
          

          

          C．It
          

          

          D．He
          

          

          

			
          
				查看答案和解析>>
			
          
		
          
						
          
				
          
	
          
	
          
		
          


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