Scientists say life will be very different in 2050. First, there will be no TV channels   in 2050. People will choose a program   from a computer and watch it on TV. In 2050, we will get information from the computers only. Second, water will be a big problem in 2050. In many places, people won't have water to drink. Third, cars will use new and clean fuels   and they will go very fast. There will be a computer in every car. And the computers will _ the cars and there won't be any accidents  . ,,. What do we know about future cars?
They will be very cheap. They will be very light. They will be safe  . They will be very expensive.