帮我分惜一下句子 LIGHT TRAVELS MUCH FASTER THAN SOUND

帮我分惜一下句子 LIGHT TRAVELS MUCH FASTER THAN SOUND Light travels much faster than sound. It ( )that light travels faster than sound Light travels faster than sound改为过去式 I said to my students ：“light travels much faster than sound He said,“Light travels much faster than sound”.改为间接用语 The teacher said light (travels) much faster than sound.为什么填 As is known to us all,light travels much faster than sound. 1 He said,"Light travels much faster than sound." 2 His moth light travels faster than sound的同意句 “light travels faster than sound , ”our teacher told us . 改为 怎么把Light travels faster than sound.改成一般疑问句