Light __(travel) at 186300 miles a second.That _(be)3000000 kilometres a second

分类: 作业答案 • 2022-01-09 18:01:21

问题描述：

Light ______(travel) at 186300 miles a second.That _____(be)3000000 kilometres a second

答

travels
is

Light ______(travel) at 186300 miles a second.That _____(be)3000000 kilometres a second