The Past Perfect and the Past Perfect Continuous

We had been living in the house for a year before we decorated the kitchen.

We had bought the tickets before we went to the theatre

Joe was happy. He had won the first prize in the competition.

They had been____ ( to study ) hard all morning, so they were tired.

When I arrived at the cinema, the film had ____( to start)

They had been working for 5 hours by lunchtime yesterday.

He went to bed .... he had brushed his teeth

They had been walking... hours before they stopped for a rest.

She had .....( to write) many letters by lunchtime.