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


		
     
    


		
    
		
    題目列表(包括答案和解析)
    

		
		
    

    


    
	
    				
    
									
    --Who is singing in the next room?
      
    --         must be Marie．
      
    A．It                        B．She                     C．This                             D．There
    

			
    
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    --Who is singing in the next room?
    --________ must be Marie.

    1. A.
      It
    2. B.
      She
    3. C.
      This
    4. D.
      There
    

			
    
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    —Who is singing in the next room?        
    —______ must be Mary.      
    

    [     ]
    A. She    
    B. This    
    C. It    
    D. He
    

			
    
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    —Who is singing in the classroom? 
    —_____ must be Susan. 
    

    [     ]
    A. She
    B. It
    C. This
    D. He 
    

			
    
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     —Who  is singing in the next room?　
     — It _____ be Lucy. She has gone to Hong  Kong.
        
    A. can’t　　　　  　　　　　 B.  must　　　　  C. may  not　　　　　 D. needn’t
        
                     
    

			
    
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