when while then

来源：学生作业帮编辑：百度作业网作业帮分类：英语作业时间：2024/04/29 16:20:41

when while then
i was about to go back to sleep ________suddenly my bedroom became as bright as day.
A.when B.while C.then D.as
为什么不是C呢

我快睡觉时,我的房间突然变得和白天一样
when指的是“就在这时”（又强调意味）
而then是然后,是连接上一动作,在这里不适合

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