完形填空 Languages are always changing and developing. This isn't a bad thing. If English hadn't changed for a long time, we wouldn't have words to 1 telephones, washing machines, computers or some other new things. Languages change for several 2 . First, they change because the needs of their speakers change. New technologies, new products, and new experiences need new words to express them 3 . Another reason for change is that different people have different language experiences. People use different kinds of words and expressions, 4 they have different ages, jobs, education levels and so on. How do languages develop then? On the one hand, many of the language changes begin with young people. When young people 5 others of their own age, their language grows in grammar, words and expressions that are 6 the old people's. Some have a short lifetime but 7 can influence the language for long. On the other hand, we get new words in many different ways. We borrow them from other languages. We create them 8 making words shorter or combining words and we make them out of proper names. Languages that 9 over time is considered to be dead languages. The fact that English changes so much shows that it is 10 .