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I have to see the doctor because I a lot lately. [ ]A. have been coughing B. had

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I have to see the doctor because I a lot lately. [ ]A. have been coughing B. had

I have to see the doctor because I _____ a lot lately. [     ]A. have been coughing
B. had coughed
C. coughed
D. cough

试题答案

A