I (see) you yesterday.
saw (Past Simple)
I (write) a letter yesterday at nine o`clock.
was writing (Past Continuous)
I (meet) my wife in 1983.
met (Past Simple)
She (buy) a new dress four days ago.
bought (Past Simple)
When I was a boy, I (walk) a mile to school every day.
was walking (Past Continuous)
She (publish) her first poem by the time she was eight.
had published (Past Perfect)
The children (do) their homework when I got home.
were doing (Past Continuous)
I called his office but he already (leave).
had left (Past Perfect)
He and Anne (marry) after George died.
had married (Past Perfect)