1) _________ I was playing, my mother called me. a) while b) when 2) Sarah broke her arm ______ she was riding her bike. a) while b) when 3) _________ I was driving to school, I saw an accident. a) while b) when 4) I was playing _______ my mother was cooking. a) while b) when 5) He was listening to music _____ he was reading. a) while b) when 6) The kids arrived _____ I was having a bath. a) while b) when 7) What were you doing ______ you heard the news? a) while b) when 8) I was ready to go to bed ______ Sue arrived. a) while b) when 9) He fell off the ladder ______ he was climbing a tree. a) while b) when 10) ______ he was painting some eggs, Sarah was reading. a) while b) when 11) _________ she arrived, it was almost midnight. a) while b) when 12) She waved goodbye ____ I left. a) when b) while 13) It was snowing _______ I woke up. a) while b) when 14) _____ she was dancing, I was getting the drinks. a) while b) when 15) _____ the telephone rang, Daisy was cooking. a) while b) when 16) ______ the train left , Thomas was rushing to the station. a) when b) while 17) ______ my father was reading a book , my sister was playing. a) while b) when 18) ______ the teacher came into the classroom, some students were fighting.  a) while b) when 19) ______ she was a little girl , she visited her grandparents with her mom. a) while b) when 20) I was reading a book_________ I heard a noise. a) while b) when 21) ___________ Rose was cooking dinner, her husband went to work. a) while b) when 22) __________ Sandra and Kathy were talking in the living-room, the doorbell rang. a) while b) when 23) Sharon came home __________ her brother was playing video games. a) when b) while 24) ________ Angela got home, her mother was making some coffee. a) while b) when 25) They were sleeping ________ the burglars broke in. a) while b) when 26) We were having a lesson ____________ we heard a terrible noise. a) while b) when 27) ___________ I was cycling, the rain started. a) while b) when 28) He broke his arm _____________ he was playing basketball. a) while b) when

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