Trucks and buses were driven on gas carried in large bags on the roof. 卡车与公共汽车皆烧煤气,煤气是装 载车顶上的袋中
Trucks and buses were driven on gas carried in large bags on the roof. 卡车与公共汽车皆烧煤气，煤气是装 载车顶上的袋中
Look at the dialogue and find the use of the past participle
Look at the dialogue and find the use of the past participle