摘要： I have to see the doctor because I a lot lately. (A) A. have been coughing B. had coughed C. coughed D. cough
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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 |
. I have to see the doctor because I_________a lot lately.
| A．have been coughing | B．had coughed |
| C．coughed | D．cough |
. 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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