Three months later, on 1 July, the base began training.

Does he actually leave the base to begin a journey to Sweden?

But before long, their economic base began to be eroded, too.

As the computer fails, the base begins to freeze over.

Last August, the base began a basic sensor operators' course.

The base began as a training facility for fighters and bombers.

But if either the regulatory or ethical base begins to erode, then you've got some real problems.

As the war drew to a close, the base began a rapid decline.

The base of the plant will begin to turn yellow.

The base of the wall, down the stairs, began to glow blue.