He spent much of his life living and working in the United States.

One night, a local man told some of the students about the time he had spent working in the United States.

He also spent some time working in the United States.

Most young men leave town to work in the United States.

Each has worked in the United States for eight years.

He has worked in the United States for about seven years.

The system is one which has worked well in the United States.

Here's how such a system might work in the United States.

She also has worked in the United States as a model.

He then worked in the United States for four years.