She was playing _______ her mom arrived. ____ They were running _______ it started to rain.____ I was studying _______ he was listening to music. ____ They were playing ___ we were watching. ____ I was writing ___ my pen broke. ____ He was sleeping ________ the baby cried.____ ____________ she was driving, it started to snow.____ I saw a cat ___________ I was walking.when ____

"while or when"

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