Ответ:

1. Everybody'll, drive electric cars. Petrol cars won't exist in the future.

2. We'll live under the sea in big cities. Won't live in houses and flats like today.

3. We won't tidy our homes in the future. We'll have machines to do all the cleaning.

4. We won't go to the beach for our holidays. We'll travel to different plants.

5. We won't need to think. Computers'll control our lives.