All the people were sad __the news. in on at with 该选哪一个啊,有固定的短语么
问题描述：
All the people were sad __the news. in on at with 该选哪一个啊,有固定的短语么
答
at
at常用来表示产生某种情绪的原因.（有时翻译成“一听到/一看到...”)