根据短文内容，补全所缺的单词。

    There will be many changes in our life in the future. We will flying cars to work. We will travel to  . Maybe we will  live in space. Students won't   schoolbags to go to school any more. They will learn on  at home. And there will be robots in our home. The robots will help us do all the housework. Life will be great at that time.