短文填空

What will our life be like in the future？We won't use paper to on. We can study on computers. And there will fewer cars and less pollution. Everyone will play a in saving the earth. The sea will be cleaner and the sky will be . So the environment will be better and better.

I believe people will even have robots in their homes. They can help the housework. Of course, there are already robots in factories now. They do simple jobs over and over . And they will never get tired.

People will be to fly to the moon for holidays. Perhaps people will live on a station one day. However, some people disagree. They think it is for humans to live on the moon.