问题补充：
Every passenger boarding the Titanicfilled with confidence that the ship was unsinkable.
A. was
B. had been
C. has been
D. is
答案：
(答案→)A. was
B. had been
C. has been
D. is
解析：句意：登上泰坦尼克号的每一个乘客都充满自信这艘船不会下沉。在因为that后的谓语动词用的是过去式，这两个动作同时发生的，故用过去式，故选A。
