题目内容：

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

How to Avoid the Coronavirus? Wash Your Hands

As a New York Times reporter in China, I covered the SARS outbreak in 2002 and 2003 1. a new virus was first detected in Guangdong. My two children attended elementary school in Beijing throughout the outbreak.

The International School of Beijing, where my children were students, 2.(be) one of the few in Beijing that stayed open.

The school conducted several simple precautionary3.(measure): a serious note to parents warning them that students would4.(screen) for fevers with ear thermometers at the school door. There was no5.(share) of food at lunch. The teacher led the kids to wash their hands6.(frequent) throughout the day at classroom sinks, while singing a “hand washing song”7.(ensure) they did more than a quick pass under the faucet (水龙头) with water only.

With all these, I observed something of8.public health miracle: Not only did no child get SARS, but it seemed no student was infected9.anything at all for months on end.

The World Health Organization declared the SARS outbreak contained in July 2003. But, oh, those habits persisted. The best ways of10.(prevent) against SARS or the new coronavirus are the ones that Grandma taught us.