1 . 从下面的方框中选择合适的词，将其正确的形式填在句子中。选项中有两项为多余选项。

1. Thousand were killed in the early stage of the novel virus spread because of lagging countermeasures, after which three related officials ____________ from their positions.
2. The proposal was instantly voted through with two to one in favour, ____________ by enthusiastic applause.
3. Since the lockdown of the city on Jan.23rd, the students and teachers in our school ____________ online learning and teaching at home.
4. While a moderate amount of stress can be ____________, too much stress can exhaust you.
5. Larger and longer trials are needed ____________ the clinical effect and safety of this new drug.
6. Heroic sacrifice in disaster or war is not ____________ to self-preservation. It is people’s choice based on their value of life.
7. Responsibility and reliability are the essential ____________ to be a trustworthy citizen in any society.
8. Do not let a lack of materials to hold you back from ____________ your dream. Nothing is impossible to a willing mind.
9. New public opinion polls show the President’s ____________ rating at its lowest point since he took office.
10. The Chinese people have shown great sympathy for the victims in the Covid-19 epidemic in the United States,     ____________ those political conflicts.