A．Analyze the benefits of using credit card in our daily life.
B．Urge people to use credit card more often as a measure to reduce murders in places like convenience-store.
C．Explain the most dangerous jobs in America.
D．Comment on the ways of payments in the gas station.

A．He hasn’’t got enough money.
B．He can’’t lead an independent life at home.
C．His mother has been out of a job for a long time.
D．His mother doesn’’t like him.