America and her friends were eating lunch while the other kids were playing., Those bells rang while I was teaching my class.,  The store employees were opening the store when I arrived., While I was working on my computer, the lights went off., While Grandma was planting radishes, Grandpa was planting carrots., The students came running while I was grading their tests., My dogs were sleeping soundly when someone knocked on the door., While they were having a conversation, something made a noise in the kitchen., While he was painting the wall, his assistant was talking to the house owner., The squirrel picked up all the acorns while I was taking pictures. , My aunt was helping my mother when my cousins left for school., While those thieves were scaping, the police caught them.,

While and When

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