What did he learn from the life on the farm He learned a great deal about the importance of ______.

A．The man should have a health check-up.
B．The man should invite someone to help him.
C．The wan should try to solve the problem himself.
D．The man should send the machine to a repair shop.

A．The store was closed.
B．The driver was drunk.
C．The traffic lights were red.
D．A man was just crossing the street.