My name is Linda. I am now in everyone's family. Many people like me. They use me to see movies or get some information(信息) for other things. I will help students to study on line. I think I am very helpful to people.

    I am Eddie. I am thin but strong. I will come into everyone's family in ten years. I can help people do some housework. I can make people relax(放松).

    Please look at me. My name is David. I am very small and light. I have many brothers and sisters. People will use us in the future. We will take people to many places. We only(仅仅) use sunlight but not any gas(汽油). So we won't make any air pollution(污染).