Life in the year 3044 is very different _______ life in the 21st century. We still do many of the things as usual，but we do them differently. For _______，we now have e-friends to help us and keep us company. An e-friend is a machine that looks just _______ a human being. It can walk and talk and can do almost _______ we human beings do. My e-friend is a lot like me and we have _______ fun together. She helps me _______ my homework and we often go swimming. She is programmed to take care of me if anything happens，so I always feel safe when we are together. She can also _______ me messages，just like old-fashioned e-mail，and I can download（下载）information from her memory. It's great _______ an e-friend-I am never lonely and I always have someone to talk _______.

I would like to tell you more about life in the year 3044，but I have to send my e-friend to clean up my room. Maybe ________ I will be able to travel back in time and visit you.