——cold winter nights前面是用in 还是用on?为什么?

是in cold winter nights还是on cold winter nights ——cold winter nights前面是用in 还是用on?为什么? （—）a cold winter night 中间填什么介词.in还是on. _____a cold winter morning. ()a cold winter morning 寒冷的冬天是the cold winter还是cold winter? this winter is so cold In winter,it is cold. Winter is_____(cold) than autumn. She doesn't go shopping ____cold winter nights 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 winter：It is cold and often snows in winter.翻译 And the days are longer than winter,the nights are shouter than winter. It is very cold in winter.It is best———warm clothesA put on B to dressC wearingD to wear a cold winter evening前的介词 Sometimes_____snows hard in winter and______is very cold.