1) I was brushing my teeth _____ my sister was making tea. a) when b) while 2) He was riding a horse ______ the car drove to the stable. a) when b) while 3) Sue was walking along the path ______ it started to rain.  a) as b) while 4) You were washing the dishes _____ I was drying them. a) as b) while 5) Kate was speaking to the doctor _____ her mobile telephone rang. a) when b) while 6) The waiter was carrying the tray ______ he dropped a glass. a) when b) while 7) We were discussing the film _____ Mary was looking through some magazines. a) as b) while 8) Sam was crossing the road _____ he saw his friend at the bus stop. a) when b) while 9) Lin and Wendy were preparing for the test ______ the postman knocked at the door. a) as b) while 10) The child was eating soup _____ his mother was making salad. a) when b) while

Past Continuous while/when

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