1.人们在旅行时或是匆忙时经常丢东西。
People often lose things____________they’re 
traveling________ _______they are in a hurry.
2.他们把东西落在飞机，火车，公交车和出租车上？
They __________ ________on planes,or trains,on buses______in taxi.
3.那就是为什么在机场和车站有失物招领办公室的原因。
__________ _________there are lost and found offices at airports and stations.
