是in the morning of March 17,1994.还是on the morning ofMarch 17

是in the morning of March 17,1994.还是on the morning ofMarch 17 是ON THE MORNING OF 还是IN THE MORNING OF? 填空题：----- ( On,In) the morning of March the first. on the morning of March 31st与in the morning of March 31st都正确 是on the morning of tomorrow还是in the morning of tomorrow 是on the morning of Mother's Day还是in the morning of Mother's 是 in the morning of June first对呢 还是on the morning of June fi 是on the morning还是in the morning 是in the morning还是on the morning? ON the morning of March first.可以这样翻译吗?on the morning on marc 英语中是in the morning on weekends 还是on the morning on the weeke 是On the morning of April还是In the morning of April?这里没有精确到天