When was the first man with A（H1N1)flu in mainland China known fo_英语解答

When was the first man with A（H1N1)flu in mainland China known for sure?_______May11,2009 A,In
B.On C.For D.Since

人气：352 ℃　时间：2020-01-27 09:08:21

解答

On
你可以记住口诀：at时间点,有on必有天,in指月季年,也和色相连
就是说,有具体的时间点的时候用at,具体那一天用on,说到月份,季节,年份,就用in ；而且说谁穿了什么颜色的衣服的时候,也是用in XX（color）