Complete the sentences.

1. Over the course of a century, from 1900 to 2000, the population grew steadily.
2. The lecture / for almost three hours and everyone was totally bored.
3. The archaeologists discovered some tools which dated from the Stone .
4. Time seems to when you’re enjoying yourself.
5. A period of seven years the two earthquakes.
6. Shakespeare’s plays have a quality - they never grow old.
7. It was just a visit. She only stayed for about ten minutes.
8. There was a pause as the official considered her answer. Then she said she would try to help us.