the snow fell day day A on B after Cto Dbuy
问题描述：
the snow fell day day A on B after Cto Dbuy
答
D
A：没有day on day这个短语
B：day after day日复一日地
C：一般用from day to day.过一天算一天,或天天,一天又一天（指经常变化）
D：day by day:n.一天天 ,逐日,逐渐 如:It is getting warmer day by day.