请教og 12的67题

purelovecat

Affording strategic proximity to the Strait of Gibraltar, Morocco was also of interest to the French throughout the first half of the twentieth century because they assumed that if they did not hold it, their grip on Algeria was always insecure.

(A) if they did not hold it, their grip on Algeria was always insecure
(B) without it their grip on Algeria would never be secure
(C) their grip on Algeria was not ever secure if they did not hold it
(D) without that, they could never be secure about their grip on Algeria
(E) never would their grip on Algeria be secure if they did not hold it

答案是b没有问题。

我想请教未划线部分的they指代的是什么？
这个句子不太明白啊。。

PMFTOTC

French
bu zi ....

purelovecat

PMFTOTC 发表于 2013-10-14 23:16
French
bu zi ....

thx！！！