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 man should try to solve the problem himself.
D．The man should send the machine to a repair shop.

A．They should go shopping.
B．They should think about meals and many other things.
C．They should go to the small stores.
D．They should have a party.