What is the man going to do?

W: Do you know what time you’ ll be back this evening?
M: I’ m not sure. It depends on how long the interview lasts. Oh, dear, I hope things go OK. I know I can do the job. It’ s just getting that across to them.

W: How long have you been a lock-keeper, Mr. Potter?
M: Oh, dear, let me think...um...I started when I was 25, so that means I’ ve been at it for twenty-one years now. Yeah, that’ s it—three years on the Oxford Canal and the past eighteen years here on the Reading Stretch. Twenty-one years in all.