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          —What was the teacher doing at that time?
          —He        lessons at school.
          A．givesB．gaveC．was givingD．is giving
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          根據(jù)語境可知此題考查過去進行時的基本構(gòu)成，was或were doing sth表示過去某個時間正在做某事。因he是第三人稱單數(shù)故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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