优题课 - 聚名师,上好课(www.youtike.com)
  首页 / 试题 / 初中英语 / 试题详细
  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:58

In the past people didn't know that light        faster than sound.(  )

A.

travels

B.

travelled

C.

travel

登录免费查看答案和解析

Inthepastpeopledidntknowthatli