问题补充:
for the captain ,the ship would have sunk with all on board .
AHadn’t it been
B. Had it been not
C. Not had it been
D. Had it not been
答案:
A. Hadn’t it been
B. Had it been not
C. Not had it been
(答案→)D. Had it not been
解析:这相当于if引起的条件状语从句的虚拟语气的句子,把Had提到前面,句子用倒装语序。