A、It is usually boring. B、He keeps the students awake. C、It is not allowed to drink coffee. D、There is too much work. A

W: What did I do wrong? Did I take a wrong turn?
M: I’m not sure, but(1)I think that you turned left when you should have turned right.
Q: What can we infer from the conversation?

W: You had met Professor Johnson before, right? How would you describe his lectures?
M: Well, let me put it this way:(3)I could never stay awake in one of his classes without first drinking at least two cups of coffee.
Q: What does the man say about Professor Johnson’s lecture?