题目内容：

SAT语法题,谢谢啦!
Though I am acquainted with Mr.Bartholomew and have long known of his interest in the painting,that he has gone to such lengths (to obtain it astonishes )me.
请问维护森么括号里的没错,为什么不写to astonish.

优质解答

这样断句:
that he has gone to such lengths to obtain it -- 主语从句
astonishes me -- 动 宾
这样就清晰了.