Mr Brown has been working in this office ...... a month.

David has been in prison ...... 1985.

Phillip has been missing in action ...... last week.

The pyramids have lasted ...... over 2,000 years now. Hopefully, our modern way of life will not destroy them.

The little boy has not spoken a single word ...... the tragical accident with his parents.

Mr Handrickson has driven the same car ...... 2001.

The water has been boiling ...... just a few minutes now.

The young man has been on his feet ...... 6.30 this morning.

My parents have been trying to learn Spanish ...... several years.

No one has entered the power plant ...... the strike began.

...... they got married, Pete and Lilly have been happier than ever before.

Bratislava has witnessed some terrible weather conditions ...... the last two months.