While I was taking a shower,my mother came home., When she turned off the light,the baby was  crying., I heard the doorbell ring while my mom was preparing dinner., The girl was dancing when I took off my sunglasses., I was hanging the clothes while my husband knocked on the door., The bird was singing when I woke up this morning., While he was reading, Mary got home., I kept silent while he was writing., When I got home, he called me., The power went out while I was taking a shower.,

B6 U4 when/while

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