题目内容：

阅读下列短文，根据短文内容填空。在未给提示词的空白处仅填写1个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。并按答案书写在相应位置。

There are two especially interesting things to admire about the Inca civilization. The first is the roads 1. paths which they built to connect their important cities. These Inca roads were made up of two north-south highways and many small roads crossing the mountains east to west. The roads were for Inca soldiers and their officials. Second, the Incas built wonderful cities full of 2. (amaze) architecture--but there were no markets in these cities. One of the interesting 3.(question) of history is how the Incas lived without shopping!