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急the injured students in the traffic are in three hospital.N

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急the injured students in the traffic are in three hospital.Now they are being treating carefully
now可以用在现在完成时.为什么不可以用have being treated?
急the injured students in the traffic are in three hospital.N
now是现在进行时
再问: 可以的。 I have arrived home now. I have finished my homework now.
再答: have应+现完吧 不+ing
再问: 你是初中的吗,是的话,算了,这是高中的知识点