阅读下面短文，在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。

    Great changes (take) place in people's life in the past 20 years. In the past, people kept in touch with (relative) or friends mainly by sending letters. They would listen the radio for news and other information. Children used (go) to school by bicycle. Big families (have) to share small rooms. Now people can talk to others by telephone on the Internet at home. they are free, they watch the news and other programs on TV. Some families are rich enough to send their children to school in (they) own cars. More and more people live in big and bright apartments several rooms. In a word, people live (good) than before.