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


		
           
          


		
          
		
          題目列表(包括答案和解析)
          

		
		
          

          


          
	
          				
          
									
          —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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