People used to build houses of stone and wood, but now many other m ________ are used to build houses as well.
In the West, people are taught to wear masks only when they get sick. Masks are 1. (see) as a tool to protect sick people and prevent the disease from spreading, so 2. (health)people don't need to wear then. Therefore, during the novel coronavirus (新冠) outbreak, overseas Chinese 3. (student) said that they would be"stared at like a virus spreader" if they go out 4. a mask. According to a survey done by Global Times among some 5. (Europe) and American people, wearing a mask in public can make them feel "worried", "shy", and "afraid of being looked at 6. (different)."
But as 7. number of COVID-19 cases continues to grow around the world, many people in the West are 8. (change) their attitudes (态度) . In the US, for example, the need for masks 9. (be) very high now. The US surgeon general (卫生局局长) has been asking people 10. (avoid) hoarding (囤积) masks, as they are more needed in hospitals than by the general public.