要求：1). 表达清楚，语句通顺，意思连贯；

2). 不得使用真实的地名、校名和姓名等；

3). 词数：80左右。文章的开头与结尾部分已给出，不计入总词数。

部分参考词汇：熬夜stay up；垃圾食品junk food；均衡饮食keep a balanced diet；按时饮食have meals regularly

How to Keep Healthy

    Nowadays, more and more people know the importance of keeping healthy……

                      . In this way, we can enjoy a happy life.

从安全、环保、节能、简便等方面考虑实验室制取氧气的最佳方案是（　　）

    Hello, boys and girls. Welcome to this place. This is a f____ station. It's big. We can see some fire engines. They are r____. How many fire engines? Let me count. One, two, three…Ten are new, a ____two are old. The man is a f____. He's Jill's father. He's Mr Black. He's a t ____man. He likes helping people. He likes his job.