Definition: used to show the cause of something, especially a feeling Level: A2
我们对此消息感到惊讶。
We were surprised ___at the news.
我对这个前景感到相当兴奋。
I was quite excited ___at the prospect.
为什么从来没有人被我的笑话逗笑？
Why does no one ever laugh ___at my jokes?
