I was walking to school _______ it started to rain., when, while, She was cooking dinner _______ her brother was setting the table., while, when, We were watching a movie _______ the lights went out., when, while, _______ I was studying, my phone rang., while, when, He was driving home _______ he saw an accident., when, while, _______ they were playing football, their parents were talking., while, when, The teacher was explaining the lesson _______ someone knocked on the door., when, while, I fell asleep _______ I was watching TV., while, when, _______ we were having dinner, my sister was texting her friends., while, when, She was listening to music _______ she was doing her homework., while, when.

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