the passengers were b________the train one by one at7:40this morning.

分类: 作业答案 • 2022-01-01 11:38:24

问题描述：

the passengers were b________the train one by one at7:40this morning.
急

答

boarding 上火车
board做动词用,表示“上（飞机、船、车等）”
乘客今天早晨7:40一个一个登上火车