— Hi! John, would you like to play football with us?
— Oh，I can’t. I my lesson all the morning and still need half an hour.
A. am reviewing
B. have been reviewing
C. have reviewed
D. reviewed
网友回答
A. am reviewing
(答案→)B. have been reviewing
C. have reviewed
D. reviewed
解析：根据时间all the morning，一整个上午到现在一直在复习功课。所以用现在完成进行时，选B。