Most people have jobs．They go to
(1) nearly every day．Some people are lucky．Either they have very interesting jobs or they can make a lot of money．Most people are not so lucky．Either their jobs are not very interesting or they don't make a lot of money．
The most interesting jobs are often the most
(2) ．It
(3) a long time to learn how to do them．Doctors study for at least 6years after finishing school．Airline pilots study for longer．They have to learn to
(4) in small planes first，and then
(5) move up to bigger and bigger planes．Most airline pilots are at least 30years old．
Some young people have interesting and well-paid jobs．Many successful
(6) are young．Football and tennis stars are usually under 35．Older people usually can't play these sports very well．They can't move fast enough．Golf，however，is a good sport for
(7) people．
Most people work until they are 60or 65years old．Then they retire （退休） and have a lot of
(8) time．Some people
(9) retire．These people usually have very interesting jobs．
(10) ，artists，musicians，and actors usually work until they die．Their work is their life．