假定你是李华，当前新型冠状病毒(COVID-19 virus)在全球肆虐，你的英国朋友Alex通过email向你询问关于预防病毒的有效方法。请你围绕这一主题，给Alex提供合理建议，帮助他度过危难时期

假定你是李华，当前新型冠状病毒(COVID-19 virus)在全球肆虐，你的英国朋友Alex通过email向你询问关于预防病毒的有效方法。请你围绕这一主题，给Alex提供合理建议，帮助他度过危难时期。
要点如下：
1. 写信的原因和目的；
2. 建议的具体内容: 尽可能居家，出门戴口罩，勤洗手，定期锻炼，保持乐观的心态等。
注意：
1. 词数80左右，书信的开头和结尾已写好；
2. 可以适当增加细节，以使行文连贯。
______________________________________________________________________________
【答案】
Dear Alex,
What a relief to hear from you when the COVID-19virus has made its way around the world！As you mentioned in your letter, China has been sparing no effort to fight the battle and our victory is around the corner. So, I’d like to share some measures which prove effective in practice.
First of all, stay at home and avoid face-to-face contact if possible. Do wear masks once out, and keep a proper distance with others. In addition, wash hands properly and exercise regularly to improve your immune system. Most importantly, everyone should have a positive attitude to the situation. Attitude means everything.
Best wishes. 【解析】