【单选题】听力原文:M: Prof. Kennedy has been very busy this semester. As far as I know, he works until midnight every day. W: I wouldn't have troubled him so much if I had known he was so busy. Q: What do we learn ...
A.
The woman has trouble getting along with the professor.
B.
The woman regrets having taken up much of the professor's time.
C.
The woman knew the professor was busy.
D.
The woman knew the professor had run into trouble.