WHEN, I was cooking dinner _ my sister called me., I was watching TV _ my dad arrived home., _ I found an old photo, I was cleaning my room., _ her friend knocked on the door, she was talking on the phone., I was listening to music _ my mom asked for help., WHILE, _ I was walking to school, it started to rain., _ I was studying, my phone rang., The lights went out _ they were eating lunch., The dog ran away _ we were playing outside., _ he was riding his bike, he saw a beautiful bird..

WHEN or WHILE?

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