they are waiting for a bus ___ the bus stop.a.in b.to c.on d.at
问题描述:
they are waiting for a bus ___ the bus stop.a.in b.to c.on d.at
答
D表示小地方用at
they are waiting for a bus ___ the bus stop.a.in b.to c.on d.at
D表示小地方用at