[originaltext]W: You had met Professor Johnson before, right? How would you des

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

W: I can tell just by looking at your face that you had a good time at the concert.
M: Absolutely. And judging from the amount of applause, everybody appreciated it.
Q: What does the man mean?