what is that we havein december but we don't have in any other mouth

问题描述:

what is that we havein december but we don't have in any other mouth
有谁知道谜底

D
January是一月
February是二月
March是三月
April是四月
May是五月
June是六月
July是七月
August是八月
September是九月
Octomber是十月
November是十一月
December是十二月
惟独十二月有字母D