It is astonishing that a person of your intelligence could be cheated so easily.像你那么聪明,这么容易就能被骗倒,真教人惊讶。....a person...could be cheated so easily
这里的should表示的是“竟然”的意思,是一种常考的特殊用法
我怎么觉得空格后面应该是 be cheated so easily?