Tina is fourteen years old.She was born ( )a cold winter eve

Tina is fourteen years old.She was born ( )a cold winter evening.(选择填空：A：inB：onC：at)

on,以下是辨析：
【in】我是“大姐”,因为我后面所接的都是较长时间.具体用法有：
1． 表示在较长的时间里（如周／月份／季节／年份／世纪等）.如：in a week； in May； in spring／summer／autumn／winter； in 2008； in the 1990’s等.
2． 表示在上午、下午或晚上.如：in the morning／afternoon／evening.
3． in the daytime（在白天） 属于固定搭配,指从日出到日落这一段时间,反义词组是in the night.
4． “in ＋ 一段时间”表示“多久以后／以内”,常与将来时连用.如：in half an hour； in ten minutes； in a few days等.
【on】我是 “二姐”,我后面所接的时间多与日期有关.具体用法有：
1． 表示在具体的某一天（如日期、生日、节日或星期几）.如：on May 4th,1919； on Monday； on Teachers’ Day； on my birthday； on that day等.
2． 表示某一天的上午、下午或晚上.如：on the morning of July 2； on Sunday afternoon； on a cold winter evening等.
【at】我是“小妹”,因为接在我后面的时间最短.具体用法有：
1． 表示在某一具体时刻,即几点几分.如：at six o’clock； at half past nine； at a quarter to six； at this time等.
2． 表示在某一短暂的时间.如：at noon； at this moment； at the end of a year； at the start of the concert等.
用介词at、on、in填空
1．He came to my family ＿＿＿＿＿＿＿ May,1999．
2．He got home ＿＿＿＿＿＿＿ midnight．
3．Tree leaves begin to fall ＿＿＿＿＿＿＿ September．
4．He went to Beijing ＿＿＿＿＿＿＿ the morning of October 8th．
5．This matter happened ＿＿＿＿＿＿ the 1970’s ＿＿＿＿＿＿ his eighties．
6．He usually goes to see a film ＿＿＿＿＿＿ Sunday．
7．Can you finish the task ＿＿＿＿＿＿＿ a month?
8．He left his homeland ＿＿＿＿＿＿＿ the age of thirty．
9．My family will move there ＿＿＿＿＿＿ two months．
10．He is kind to her ＿＿＿＿＿＿ times．