问题
选择题
I have to see the doctor because I ________ a lot lately.[ ]
A. have been coughing
B. had coughed
C. coughed
D. cough
答案
答案：A
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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
答案：A