综合填空。根据短文内容，用所给单词的适当形式填空。 live, develop,&

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综合填空。根据短文内容，用所给单词的适当形式填空。

live, develop, spend, by

     In the past, China was very poor. It has 1 more quickly in recent years. With the 2 of China, what
change will take place 3   2050? Now we have some modern factories. They can produce products with high
quality (质量). And some people are looking for better ways 4 free time. They want 5 a happy life. So
catching up with the changes of the world is a great challenge for the young people.
1.________   2.________    3.________    4.________   5.________

1. developed 2. development / developing 3. by 4. to spend 5. to live