听力原文:W: Friday's speaker is supposed to be wonderful. Are you going to attend the semi
M: Yes. But I haven't been able to get the ticket yet. Since the lecture is open to the public, I imagine that the tickets may have already been sold out.
Q: What is the man worried about?
(15)
A.There won't be enough seats for everybody.
B.The speaker won't show up.
C.The seminar won't be open to the public.
D.The tickets may have been sold out.