1) I was watching TV ______ the lights went out. a) while b) when 2) He was playing tennis ________ he broke his arm. a) while b) when 3) I was doing my homework ______ my friend was sending her mum a Whatsapp message. a) when b) while 4) I wasn't paying attention ______ the teacher was speaking. a) when b) while 5) I was walking my dog _______ I sawyou. a) while b) when 6) They were sleeping ________ the phone rang. a) when b) while 7) I was watching a horror movie ______ my brotherscared me. a) while b) when 8) I was studying ________ my mother was cooking dinner.  a) while b) when 9) He was playing football __________ his father was washing the car.  a) when b) while 10) __________ he crashed the car, he was using the cell phone.  a) when b) while

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