请问是In a cold winter morning 还是 on a cold winter morning?

请问是In a cold winter morning 还是 on a cold winter morning? 是in cold winter nights还是on cold winter nights ( ) a cold winter night.是用in还是on? 是on a cold winter morning还是in? on a cold winter day,还是in a cold cold winter day为什么不用in the weather is cold （ ）.A,winter B,in winter C,at winter D,for winter the weather is cold ( ).A,winter B,in winter C,at winter D,for winter This story happened on a cold winter in 2007.请问这里用on对不对,为什么? In a cold winter evening还是 on a cold winter evening I was born in a poor family --------- a cold winter morning.不是翻译，是填空 ()a cold winter morning i was born ____ a cold winter morningon /in （ ）a cold winter in还是on同上 It'a cold in winter改为一般疑问句 Disappeared in the lonely cold winter,a person walking slowly In winter,it is cold. In winter a snake is stiff with cold but still alive.请问为什么不用living 而用alive. I often wear sweater and coat in winter.的问句是什么?It's a little cold in winter in Guangdong的问句是？