2 . Vegetables and meat used to be eaten up within one day. Now, vegetables and meat can be kept for many days because we have a _______. In the past, we had to _______ wood to keep warm in winter. But now, our house is _______ in winter and cool in summer with air-conditioning. Before we could only write to friends. _______, we have a mobile phone which can call our friends and send news at any time now. We must go out to eat in a _______ before. Now, we can order take-out food online. Somebody can send the food you like _______ to your house in a few minutes. Paying online by Alipay or WeChat has been accepted by most people in China. _______ online by Taobao, Pinduoduo, Tik Tok, Kuaishou is more and more popular with young people.

_______ the progress of science and technology, people’s life is becoming more and more convenient. However, we can’t have the technology of AI (Artificial Intelligence) in the film yet—A robot can help you do anything you want only with _______ order. But undoubtedly, robots thinking like humans ________ widely finally in the future.