my birthday is on June 10..It's a red-letter day.中red-letter是什么意思

My birthday is on my birthday is 几月几号is后加不加on? My birthday is on January ninth对吗? My birthday is后面加不加on/at? 找错 my birthday is on october My birthday is on May______(one). My birthday is on January first.请问下on 能加吗 my birthday is on october 27.my birthday is october 27哪个对?为什么 My birthday is Nov.2nd.My birthday is on Nov.2nd.两句都可以吗? My birthday is .It is on July 19th 填空 My birthday is on Feb 29th ,so I have my birthday party every () years my birthday party is (in or on )June 15th my birthday is on the ___(twenty) of march My birthday is on the second of june 翻译 （）?My birthday is on June 2nd My birthday is ( by）（on)june twelfth my birthday is on ____(thee)of July my sister's birthday is on (saturday.)对括号提问