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