A．People are not paid for what they do but for their time.
B．Employees are expected to work through the lunch hour.
C．If their own desks are clear, they could sit idle.
D．It is difficult to get a job contract.

A．Children acquired the information they needed by direct experience.
B．Children taught one another in small supervised groups.
C．Teachers came to children’s homes.
D．Parents instructed their children in the "three R’s".