He was watching TV when his mother arrived. , The children were sleeping when there was a loud voice. , The lion escaped when he wasn't looking., I was going home when I saw the accident. , The dog ran away while I was sitting. , What were you doing when I called you? , The fire started while we were watching the concert. , I saw smoke outside while I was doing the science experiment. ,

ACADEMY STARS 5 UNIT 1 PAST SIMPLE, PAST CONT, when and while.

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