Relier Pairs matching AVersion en ligne matching par Kristina Topalova 1 A group of young children arrived while... 2 We were rehearsing for a school play last night when... 3 Everyone was wearing their character costumes when... 4 The alarm rang while... 5 They were laughing at us when... we were singing the last song. we went outside to the playground. we were waiting for the firefighters to come. an embarrassing thing happened. the teacher told them to stop.