语法分册第31页第4题

寂寞的自由

7． The only way for growers to salvage frozen citrus is to process them quickly into juice concentrate before they rot when warmer weather returns.
(A) to process them quickly into juice concentrate before they rot when warmer weather returns
(B) if they are quickly processed into juice concentrate before warmer weather returns to rot them
(C) for them to be processed quickly into juice concentrate before the fruit rots when warmer weather returns
(D) if the fruit is quickly processed into juice concentrate before they rot when warmer weather returns
(E) to have it quickly processed into juice concentrate before warmer weather returns and rots the fruit.

大家帮忙分析一下，谢谢大家

yzlinlin

见OG 第4题解释

以及

http://forum.chasedream.com/dispbbs.asp?boardID=23&replyID=134084&ID=19269&skin=1