问题描述: john has never been __ a plane. A abroad B aboard C board D broad 1个回答 分类:英语 2014-10-18 问题解答: 我来补答 答案为 B be aboard = go aboard 上船 (飞机,公共汽车,等)be on board 在船上 board the ship 登船 展开全文阅读