第二部分：知识运用（共两节，满分45分）
第一节：单项填空（共15小题；每小题1分，满分15分）
从每题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
As soon as we _____, our ship left port. Which is wrong?
A. went aboard      B. went on aboard               C. go o the ship      D. went aboard