A．It knocks at your door only once in a while.
B．It is something that no one can possibly create.
C．It comes naturally out of one's self-confidence.
D．It means being good at seizing opportunities.
A．Luck rarely contributes to a person's success.
B．One must have natural talent to be successful.
C．One should always be ready to seize opportunities.
D．Practice is essential to becoming good at something.
A．Putting time and effort into fun things is profitable.
B．People who love what they do care little about money.
C．Being passionate about work can make one wealthy.
D．People in need of money work hard automatically.