They're waiting _____ the bus stop.（at for on in) 请问改选那个介词,并能说明理由更好,
问题描述：
They're waiting _____ the bus stop.（at for on in) 请问改选那个介词,并能说明理由更好,
答
at
at the bus stop 固定搭配,在公共汽车站