根据下列短文内容，在短文后的空格处填上一个恰当的词，使短文完整、通顺。
In the future, houses will be very different. Your house 1. have a huge roof (屋顶). It will
produce electricity with sunshine. The walls will be amazing, too. They can change colors according
2. your mood. Many people will 3. to other stars to build houses, 4. as Mars for
a whole new life.
Every family will have at least one robot to do housework. With this robot, you may 5. that
you will become lazy and fat. Don't worry. There will be a machine. You get into the 6. and
choose a service to be strong 7. slim (苗条). It 8. only a few days. Also, we will eat a
kind of food pill (药片) 9. of three meals a day.
There are more crazy ideas for the future. Will these dreams come 10. one day. It's your call.
