Relier Pairs matching BVersion en ligne matching when and while par Kristina Topalova 1 Joe was painting when... 2 We were waiting for the firefighters when... 3 The fire alarm rang while... 4 Mr Carter took all our names while... 5 A boy fell over while... I was doing a science experiment. he was running out of the building. we were standing outside. we saw the smoke. he heard it.