今年, 新冠肺炎在全球爆发蔓延，很多人被感染、死亡。你的非洲网友Bob获知中国抗击新冠病毒取得了巨大成功，来信向你询问预防新冠肺炎感染的方法。假如你是李华，请根据下面要点提示给Bob写封回信。
要点提示：
要求：1. 语言表达准确，语句通顺，可适当发挥；
2. 80 词左右。开头结尾已给出，不计入总词数。
参考词汇：sneeze 打喷嚏
Dear Bob,
Learning that you want to know the ways to prevent Covid-19, I'm glad to share some good ideas with you.
Firsty,______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Best wishes.
Yours,
Li Hua
良好的习惯对我们的学习、生活都有益处。你是否拥有良好的生活习惯？请根据下列提示，以“How to keep healthy?”为题，写一篇80词左右的短文，开头已给出，不计入总词数，可适当发挥。
| 1．健康的饮食 | 多蔬菜水果，少垃圾食品 |
| 2．适当的运动 | 一星期至少三、四次运动 |
| 3．足够的睡眠 | 8—9小时 |
| 4．保持微笑(smile) | 开心、乐观 |
How to keep healthy?
What can we do to keep healthy? Here are some good ways for you.
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