题目内容：

阅读下面材料，在空白处填写 1 个适当的单词或括号内单词的正确形式。

The novel coronavirus, now officially named Covid-19, is a new 1. (ill) and scientists are still studying the best ways to control it. Defeating Covid-19, 2., is not only the job of scientists and doctors. People have an important role to play in the battle. The best wayto help prevent the virus 3. (spread) is by protecting yourself and staying healthy.

Scientists are now sure that Covid-19 is passed between people through coughing and sneezing. The virus travels through the air and can be breathed in by people nearby. It may also land 4. surfaces such as tables and chairs. If these surfaces 5. (touch), the virus may be on your hands. Touching your eyes or mouth with 6. (wash) hands can let the virus enter your body.

7. (protect) yourself and others, wear a mask at all times when out in public.  This stops healthy people from breathing in Covid-19 and 8. (reduce) the amount of the virus ill people send into the air. Most importantly, wash your hands carefully and frequently, especially 9. you are outside your home.

Covid-19 is undoubtedly a serious social challenge, but if we all contribute and behave 10. (responsible), it is one that we can overcome.