1. 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（B）
(E) never would their grip on Algeria be secure if they did not hold it
A怎么不对?仅仅是啰索吗?
1. 要用虚拟语气 因为有assume
2. never 在语气中重过always, 从句意 应该用never
要用过去将来时
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