When he was set free after twenty years in prison, he was amazed ______ the changes he found. A

When he was set free after twenty years in prison, he was amazed ______ the changes he found. A

When he was set free after twenty years in prison, he was amazed ______ the changes he found
填at
be amazed at，固定用法
对…感到惊讶；对…感到害怕

似乎都不对啊... E. by

A.at be amased at

应选A.at。 因为amaze at表示：吃惊于；对…吃惊；对……大为惊异
全句意思是：当他被监禁20年而释放时，他对他发现的变化大为惊奇。

这句话的汉语释义是：当他在监狱里二十年后被释放的时候，他_____他发现的变化感到惊讶。
amazed的相关词组是：
1.be amazed at (by)
对...大为惊奇
2.be amazed to see
看到[听到,发现]...感到吃惊
3.be amazed to hear
看到[听到,发现]...感到吃惊
4. be amazed to find
看到[听到,发现]...感到吃惊
故填空中应填at，即选A。