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    . I have to see the doctor because I a lot lately. A. have been coughing B. had coughed C. coughed D. cough 【查看更多】

     

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    （陕西卷21）. I have to see the doctor because I        a lot lately.                           

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

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