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

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

由assume that可以判断出后面的宾语从句应该用虚拟语气
A.            If X did，Y would do表示虚拟
B.            对，without可以表示虚拟
C.            If X did，Y would do表示虚拟
D.            That指代不清
E.             相比较于B选项，表达啰嗦

考点：修饰结构，动词形态
本句用到的句子结构式：if A happened，then B would happen，表示虚拟
A 谓语单词was使用错误，虚拟语气中使用would do
B 正确
C 谓语动词was使用错误，虚拟语气中使用would do
D that指代不明，应该使用it。
E 语义是正确的，但是句子表达有些啰嗦，it可能是指代Morocco，也可能是Algeria，故不能选

考点：修饰结构，动词形态
本句用到的句子结构式：if A happened，then B would happen，表示虚拟
A 谓语单词was使用错误，虚拟语气中使用would do
B 正确
C 谓语动词was使用错误，虚拟语气中使用would do
D that指代不明，应该使用it。
E 语义是正确的，但是句子表达有些啰嗦，it可能是指代Morocco，也可能是Algeria，故不能选