when, He was riding a horse ______ the car drove to the stable., Sue was walking along the path ______ it started to rain., Kate was speaking to the doctor ______ her mobile telephone rang., The waiter was carrying the tray ______ he dropped a glass., Sam was crossing the road ________ he saw his friend at the bus stop., Lin and Wendy were preparing for the test _______ the postman knocked at the door., while, I was brushing my teeth ________ my sister was making tea., You were washing the dishes ______ I was drying them., We were discussing the film ______ Mary was looking through some magazines., The child was eating soup _______ his mother was making salad..

when or while?

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