题目内容：

根据句子意思，用所给单词的适当形式填空。

With the COVID-19 epidemic 1.(hit) China, many of you might want to know more about the virus. The disease 2.(cause) by a newly-found type of coronavirus. Coronaviruses are a large family of 3.(virus). 4.word “corona” comes from Latin and refers to crowns. When people first saw a coronavirus under a microscope, they found that its spikes (刺突) made it look like a crown. That’s 5.the virus family got its name. Some coronaviruses cause disease in humans; 6.（other）spread illness among animals, including camels, cats and bats.

We 7.(find) seven types of coronavirus that can infect humans so far. Four of them are common and cause respiratory (呼吸道的) illnesses 8. mild（轻度的） flu. Rarely, animal coronaviruses can evolve (进化) and then spread among people, such as with Middle East respiratory syndrome (MERS，中东呼吸综合症) and severe acute respiratory syndrome (SARS，严重急性呼吸综合症). Novel coronavirus, 9.was first found in Wuhan, is the 10.(seven) one.