He （s ） the light from green to red when he came into the room .填一个s开头的单词

He （s ） the light from green to red when he came into the room .填一个s开头的单词
He （s ） the light from green to red when he came into the room .
填一个s开头的单词

He （s ） the light from green to red when he came into the room .填一个s开头的单词
switch