A．The man will have a chance to listen to Prof．Holt's lectures.
B．French literature is a boring and difficult course.
C．Prof．Ferns' lecture is also worth attending.
D．Prof．Holt and Prof．Ferns are going to get married.
A．Clean up the mess himself.
B．Put a sign of "Slippery Floor"．
C．Stay and warn people passing by.
D．Call some people to do the cleaning．