The children were doing their homework ______ the door knocked., when, while, ____ my dad came home, I was learning., when, while, _____ John was driving home, he saw a wonderful building., when, while, I had a bad dream _____ I was sleeping in the night., when, while, They were laughing ____ I entered the room., when , while, The girl took a photograph _____ her mother was cooking., when, while, He started to sing _____ he was watching a movie., when , while, ______ my brother came into my room, I was sleeping., when , while, ______ the boys were walking on the river, it began to rain., when , while, Mike spoke two languages _____ he started the primary school., when, while, _____ I was reading a book, my sister listened to music., when, while, _____ I saw birds, they were flying in the air., when, while.

When & While

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