He was playing football ___________ his father was washing the car., while, when, They were doing a pic nic in the park ______ the rain started!, while, when, I was walking my dog _______ a cat appeared., when, while, She was sleeping ________ the phone rang., while, when, I was doing my homework ______ my dog barked loudly., while, when, I was reading a book ___________ my brother turned on the TV., when, while, ___________ we were having dinner, the lights went out., when, while, The children were drawing ___________ the teacher came into the room., when, while, ___________ my mother was cooking, I lay the table., when, while, We were waiting for the bus ___________ it started to rain., while, when

Unit 2: When or While?

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