My Paul said to us,'Light travels faster than sound.'

My Paul said to us,'Light travels faster than sound.' Mr paul said to us,‘Light travels faster than sound.’大神教我怎么变 Mr.Wang said to us,"Light travels faster than sound." My physics teacher said that light travels faster than sound I said to my students ：“light travels much faster than sound “light travels faster than sound , ”our teacher told us . 改为 What is known to us that the light travels faster than sound As is known to us all,light travels much faster than sound. It ( )that light travels faster than sound Light travels faster than sound改为过去式 Light travels much faster than sound. my physics teacher said that light ____ faster than sound.