先通读下面的短文，然后根据短文内容和所给首字母，在空格内填入一个适当的词，使短文意思完整。所填单词在答卷上必须完整写出。（本大题共6分，每格0.5分）
I think life will be very different in one hundred years’ time. Some things will be b___1_ and some things will be worse.
Firstly, people won’t l_2___ on the land of the earth. Our cities will be in large domes(圆顶屋) under the sea. Special machines will p___3_ oxygen and light but the environment won’t be the same.
Secondly, trees and plants won’t grow because t__4___ won’t be any soil. As a result, people won’t be able to grow crops, food will mainly be in the f__5__ of pills. If the sea isn’t too polluted, people will eat f___6__.
What’s more, I think people’s e__7__ life will be different. They won’t have to w_8___ long hours because computers will help them. No one will have to do housework, e_9___.
Finally, I believe that everyone will be able to travel to the moon, to other p___10__ and perhaps even to other galaxies(星系) f___11__ a holiday.
In a w_12___, I think that in the future we will live in the interesting places.