Light ______(travel) at 186300 miles a second.That _____(be)
Light ______(travel) at 186300 miles a second.That _____(be)
light ____(travel) 186,000 miles per second
Light----[ travel]300,300 kilometres a second
Light t___ 186000 miles per second
they must be at home -there's light _____ in the bedroom A t
The teacher told us that light _____(travel)faster than soun
I told my mother that light _____(travel) more fast than sou
Nobody knew that light ()(travel)much faster than sound at t
____ you be able to travel at the speed of light,you would n
What would it be like to travel at the speed of light? 翻译
travel at half the speed of light
______ travel more slowly than light.