听力原文:W: John must be joking when he said he planned to sell his shop to go to universi
M: Don't be so sure. I don't know how many times he's told me he wishes to study some professions instead of going into business.
Q: What does the man mean?
(16)
A.He is sure that John is joking.
B.He believes John may sell his shop.
C.He thinks John wants to go to university.
D.He thinks John has already studied some profession.