每位乘客都系好了安全带准备起飞。
Every ___passenger fastened their seatbelt before takeoff.
公交车司机微笑着和乘客打招呼。
The bus driver greets ___passengers with a smile.
这位乘客想去火车站。
This ___passenger wants to go to the train station.
火车上有很多乘客。
There are many ___passengers on the train.