4.- Complete the sentences following the instructions.
- (una acción en progreso en el pasado y una acción de pasado que la interrumpe)
She was listening to music when her friend arrived
- You bought the car after (una acción anterior a esta) ... you had won the lottery
- When Ainhoa kissed Ulises (una acción anterior a esta)... he had already kissed Julia
- They had finished the exams (una acción de pasado posterior a esta) ... when they went to the party