1) __________I was watching TV, mum was reading. a) While b) When 2) ______ I came into the room, he was sleeping a) while b) when 3) _____we were visiting London, it was raining. a) while b) when 4) She was dancing,__________I first saw her. a) while b) when 5) Mary was cooking______the phone rang a) when b) while 6) _____he was thinking, the bus left a) while b) when 7) I was watching TV, _________ mom asked me to help her a) while b) when 8) I went to study in the library, so nobody interrupted me, ______ i was studying. a) while b) when 9) ______ he was working, he often listened to music. a) while b) when 10) He was walking back to his flat _______ it started raining. a) while b) when

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