单项选择题
A．tape conversations B．monitor break time C．make them work harder D．listen to conversations and watch what they do
A．It's a good place to live. B．Criminals don't deserve any better. C．He wishes he had more room in his cell. D．He thinks it is a violent hell.
A．He had nothing else to do, B．He wanted to prevent young people from getting into gangs. C．He wanted to get rich. D．He wanted a Noble Priz