Past Simple, Past Continuous, Past Perfect

When the bell rang, the children........ into the classroom and ......their seats.

By the time we......., the party.......

When l ......to the playground my friend....... already......so l .........him that day

When we........, the sun......

While my friend............, I ...........the birds.

She.......that she......a good sightseeing tour around London.

Yesterday l .......a letter from my friend, from whom l.....not......for a long time.

Many years ago people...... funny clothes.

He ........ he .......up the story himself.

We......a good long weekend after we.......all the work.