启教通信息平台
  首页 / 试题 / 高中英语 / 试题详细
  • 科目:英语
  • 题型:单选题
  • 难度:较难
  • 人气:501

John was about to go back to sleep ______ suddenly his bedroom became as bright as day.

A.after B.when C.while D.until
登录并查看解析

John was about to go back to s