1) 1. ... I was watching TV, Mum was reading a) When b) While 2) 2. ... I came into the room, he was sleeping a) When b) While 3) 3. ... we were visiting London, it was raining a) When b) While 4) 4. She was dancing, ... I first sawher. a) When b) While 5) 5. Mary was cooking, ... the phone rang. a) While b) When 6) 6. ... he was thinking, the bus left. a) While b) When

While /when

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