[SC悬赏令] 问：SC 省略考点&begin？？？不要错过！！

GMAT新手，问两道题！！！

走过路过不要错过！！

It is difficult to prevent crimes against property as 【those thatare against a】 person

(A) those that are against a   

(B) those against a

(C) it is against a  

(D) preventing those against a   

(E) it is to preventthose against a

纠结CE,为什么 to prevent those 不能省略？

An attempt to ratify the Equal RightsAmendment, begun almost two decades ago, has been unsuccessful despite effortsby many important groups, including the National Organization for Women.

(A) to ratify the Equal Rights Amendment, begun almost two decades ago,

(B) begun almost two decades ago, forratifying the Equal Rights Amendment

(C) begun for ratifying the Equal RightsAmendment almost two decades ago

(D) at ratifying the Equal RightsAmendment, begun almost two decades ago,

(E) that has begun almost two decades ago to ratify the Equal RightsAmendment

纠结AE, A 里面begun我觉得错了，我觉得应该是E里面这样，求解答！！！！