自從地球有人類居住以來，流行病就時有發(fā)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(diǎn)】現(xiàn)在完成進(jìn)行時．
【答案】Epidemics have been happening for as long as there have been people living on Earth.
【解答】
【點(diǎn)評】
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發(fā)布：2024/4/20 14:35:0組卷：3引用：2難度：0.7
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