Read these sentences and fill in the gaps with the correct verb from the past perfect continuous

Привет! Давай разберёмся с предложениями и вставим правильные глаголы в Past Perfect Continuous.

1. John was very tired. He had been running.
2. He was confident because he had been rehearsing hard for the show.
3. She had been playing the trumpet for 3 years before she joined a band.

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