单项选择题
A．computers are very expensive B．computers can do many things C．computers are very good to play with D．computers are very cheap
A．the museum B．the special shops selling some rare and interesting things C．the department store D．the hospital
A．They could earn much, but they had to work hard. B．Many of them earned money in a dishonest way. C．They were all from poor families. D．They were all thin, young boys.