自從地球有人類居住以來，流行病就時有發生。 Epidemics have been happening for as long as there have been people living on Earth.Epidemics have been happening for as long as there have been people living on Earth.
【考點】現在完成進行時．
【答案】Epidemics have been happening for as long as there have been people living on Earth.
【解答】
【點評】
聲明：本試題解析著作權屬菁優網所有，未經書面同意，不得復制發布。
發布：2024/4/20 14:35:0組卷：3引用：2難度：0.7