A、He is all right. B、He is sick. C、He is working in a hospital. D、He is giving advice to someone. B女士建议Black先生卧床休息，直到感觉好些了再起来。由此

W: Look at the time. It’s ten to ten.
M: Yes, the train will leave in ten minutes.
Q: When will the train leave?

W: Go to bed and don’t get up until you feel better, Mr. Black.
M: Thank you for your advice.
Q: What can we know about Mr. Black?