--- You look fed up with the lecture. --- Well, I it all day. A. had been listening to B. have been listening C. have been listening to D. had been listening 查看更多

 

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--- You look fed up with the lecture.

--- Well, I __________ it all day.

       A. had been listening to                               B. have been listening

       C. have been listening to                              D. had been listening 

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