短信预约提醒成功
on a certain day
on a sudden(突然)
on a winter morning
on Christmas Day
on night shift
on one's birthday转自环 球 网 校edu24ol.com
on schedule(按时)
on Sunday, on that date
on the eve of
on the following day
on the instant(马上),
on the moment(立刻)
on the Monday morning
on the New Year's Eve
on the next morning
on the point of(正在…时候)
on the spur of the moment(立刻) on this day
on this occasion
on time
