IhavetoseethedoctorbecauseI______alotlately.
A.havebeencoughing
B.hadcoughed
C.coughed
D.cough
正确答案:A考查动词时态。由时间状语lately可知此处表示现阶段一直在进行的动作或存在的状态,且强调其持续性,用现在完成进行时,选A。

IhavetoseethedoctorbecauseI______alotlately.
A.havebeencoughing
B.hadcoughed
C.coughed
D.cough
正确答案:A考查动词时态。由时间状语lately可知此处表示现阶段一直在进行的动作或存在的状态,且强调其持续性,用现在完成进行时,选A。
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