I caught a cold when I was skating on frosty day.
He was writing those nice poems ehen he had a holiday.
He learned the languages when he was iving in England.
She heard that song when she was listening to a concert on the radio.
I bought that book when I was reading up for my exams.
The boy hurt himself when he was riding the bicycle.
Philip lost his camera when he was walking about the city.
He rang up me when I was having supper.
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