请认真阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。请将答案写在答题纸上相应题号的横线上。How to keep yourself safe from Covid-19
Many people are【小题1】(concern) about their safety because of Covid-19. As a matter of fact, there is no need【小题2】(worry)about it if we take measures.
Wearing a face mask is the most effective way to protect you from getting infected, but you need to see to【小题3】that you wear it properly by tightening up the nose clip and pulling the bottom of it over your chin so that your nose and mouth are covered. However, surgical masks are not recommended for common people in that they may lead to oxygen shortage if【小题4】(wear) for long periods. Wash your hands with soap and running water completely for at least 15 seconds after returning home or touching household garbage. Regular exercise is【小题5】must for you, which is beneficial to your immune system.If it【小题6】(break)down, the risk of catching infections will multiply. So, exercise【小题7】(regular)if possible.
Apart from【小题8】are mentioned above, make sure that shared spaces have good air flow and avoid going to crowded places such as hospitals, railway stations and airports.
In conclusion, prevention is【小题9】(good)than cure.While it is uncertain【小题10】the anti-coronavirus vaccine (疫苗) will be available, keep these practical measures in mind and you’ll be safe and sound.