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          Be quiet! I ______ my homework.
          A．a(chǎn)mdoingB．havedone
          C．doD．did
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A
          

          解析試題分析：句意：請安靜！我正在做作業(yè)。結(jié)合語境可知本句描述的是現(xiàn)在正在進行的動作，故用現(xiàn)在進行時態(tài)，選A。
          考點：考查時態(tài)辨析
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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