根据中文提示，补全短文。
电脑和网络改变了我们的生活，给我们的生活提供许多帮助。现在我们可以在网上看电子书、听音乐、看电影。我们还可以在网上交朋友、购物。我们可以从世界各地获得新闻。
但是30年前，我们对电脑和网络一无所知，我们通常在学校里交朋友，我们从商店买东西，我们经常听收音机和看报纸获取新闻。我们只能在电影院或电视上看电影。
Computers and Internet have changed our life. They 1． us a lot. Now, we can read 2．, listen to music and watch films. We can also make friends and do shopping on the Internet. We can get news from all 3． the world.
But 4． years ago, we 5． know about computers 6． the Internet. We usually 7． friends at school. We 8． things from shops. We often listened to the radio and 9． for news. We saw films in the cinema or on TV.
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