Princeton vs. OG-183的疑惑

前几天在做princeton模考时碰到一道题：

Renowned for both his wealth and his eccentricity, industrialist Howard Hughes left behind a series of wills and codicils of staggering complexity, one that took teams of lawyers and squabbling beneficiaries years to sort it out. （B）

A.      took teams of lawyers and squabbling beneficiaries years to sort it out

B.      took teams of lawyers and squabbling beneficiaries years to sort out

OG上

183. Archaeologists in Ireland believe that a recently discovered chalice, which dates from the eighth century, was probably buried to keep from being stolen by invaders.

(A) to keep from

(B) to keep it from

(C) to avoid

(D) in order that it would avoid（B）

(E) in order to keep from

两个句子里都是表示主语被人。。。，为什么答案却相反呢？？？

同问同问.

实在是没查到sort out的合理解释，是不是princeton的答案错了？？？

再顶

答案肯定没错。

第一题如果是A，it明显重复了。

但是，解释起来比较难表达清楚。

A中的不定式逻辑上有点one的定语的感觉。

如果将A改为 it(形式主语) took teams of lawyers and squabbling beneficiaries years to sort it out，则A就对了。