1) ......... I was listening to music the telephone rang. a) When b) While 2) ........ the postman came , I was listening to music a) When b) While 3) We were watching a film ......... the electricity went off. a) When b) While 4) ......... I was reading a book last night , suddenly the electricity went off a) When b) While 5) The man was working ....... the alarm rang. a) When b) While 6) I was running ........ she was riding her bicycle. a) When b) While 7) _____________they were eating dinner, someone knocked on the door. a) While  b) When 8) ___________we were sleeping, the phone rang. a) When b) While 9) They were setting the table ___________the visitors arrived. a) while  b) when 10) They were taking notes __________the teacher was talking. a) when b) while 11) I was putting away the dishes_______ my friend was doing the laundry a) when b) while 12) He knocked on the door __________ I was sleeping. a) when b) while 13) __________I was washing the dishes, my wife came home. a) When b) While 14) ______ I dropped the vase , it broke into pieces. a) When b) While 15) The baby boy started crying , ______ his mother was combing his hair. a) when b) while

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