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

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