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          I have to see the doctor because I            a lot these days. 

          A. coughed     
          B. am coughing      
          C. have been coughing
          D. cough
          			
          

			
			
			
		
          



							
          
				相關(guān)習(xí)題
			
          	
						
          
			
          
				科目：高中英語
				來源：重慶市期末題
				題型：單選題
			
          
									
          I have to see the doctor because I            a lot these days. 
          

          [     ]
          A. coughed     
          B. am coughing      
          C. have been coughing
          D. cough
          

			
          
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