有关于There were two tribes in the Andes的完形填空

有关于There were two tribes in the Andes的完形填空
One lived in the lowlands and the other lived high in the mountains一篇完整的文章也行

朋友,你要的“There were two tribes in the Andes”文章全文如下：
There were two tribes in the Andes,one that lived in the lowlands and the other high in the mountains.The mountain people invaded the lowlanders one day,and as part of their plunderingof the people,they kidnapped a baby of one of the lowlander families and took the infant with them back up into the mountains.
The lowlanders didn't know how to climb the mountain.They didn't know any of the trails the mountain people used, and they didn't know where to find the mountain people or how to track them in the sleep terrain.
Even so ,they sent out their best party of fighting men to climb the mountain and bring the baby home.The men tried first one method of climbing and then another. They tried one trail and then another.After sereral days of effort,however,they had climbed only a couple of hundred feet. Feeling hopeless and hopeless,the lowlander men decided that the cause was lost,and they prepared to return to their village below.As they were packing their gear for the descent,they saw the baby's mother walk towards them.They realized that she was coming down the mountain that they didn't figured out how to climb.And then they saw that she had the baby strapped to her back.How could that be?
One man greeted her and said, "We couldn't climb this mountain.How did you do this when we ,the strongest and most able men in the village,couldn't do it?"
She shrugged her shoulders and said, "It wasn't your baby."