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				5．A．cleaning        B．clean          C．cleans         D．cleanning			【查看更多】
			


		
     
    


		
    
		
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    —What a clean (干凈的) room it is today!
    —Oh, yes! Who _____ it?
    

    [     ]
    A. is cleaning        
    B. will clean            
    C. has cleaned       
    D. had cleaned  
    

			
    
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    —What a nice classroom!
    


             —It
_____ every day.
    


    A.is cleaning      B.has
cleaned   C.must clean     D.is cleaned
    


     
    

			
    
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    Our classroom   _______   by us
every day!
    


    A.is cleaning  B.has cleaned C.must clean D.is
cleaned
    


     
    

			
    
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    It’s hard to keep the house       with
three kids.
    


         
A. cleaning     B. to clean     C.
cleaned     D. clean
    


     
    

			
    
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    Our classroom          by
us every day!
    


    A. is cleaning  B. has cleaned C. must clean D.
is cleaned
    


     
    

			
    
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