Once the questions are finished, the examiner analyzes the results to determine if the person tested ____ truthful.

Well-trained examiners can usually detect lying with a high degree of ____ when they use a polygraph. However, because different people behave differently when lying, a polygraph test is ____ perfect.

This comparative advantage is ____ by key factors of production such as land, capital, and labor.

While international trade has long been conducted in history, its economic, social, and political importance has been ____ in recent centuries.

It is also the subject of many international agreements that aim to govern and facilitate international trade, such as those _____ through the World Trade Organization (WTO).

Their young captive ____ to be a mischievous boy. He viewed the kidnapping as a wonderful camping trip.

They lowered the price to $1,500. Yet, knowing perfectly well ____ a troublemaker his son was, the father refused to give them any money.

Though ______ scientific evidence, this belief is widely seen in books, magazines, and television shows.

They went on a strike to strive against racial ______ .