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          Our classroom   _______   by us every day!
          A．is cleaningB．has cleanedC．must cleanD．is cleaned
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D

          試題分析: 句意：我們的教室每天由我們來(lái)打掃！.is cleaning正在打掃，has cleaned 已經(jīng)打掃，must clean 必須打掃，is cleaned被打掃。根據(jù)by us由我們，可知為被動(dòng)語(yǔ)態(tài)，故選D。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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