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2 We were flying home from Iceland  when we saw the Northern Lights.

3 They had an accident while they were driving to the beach.

4 My parents met an old friend while they were sightseeing in Istanbul.

5 Ben nearly drawned when he was swimming in the pool.

6 I was eating dinner when I suddenly felt ill.

7 As the children were swimming, it started to rain.

8 While Callum was riding his bike, he saw a wild horse.

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