英语单选语法题求助!oct,1st,（ ）is our national day,is always celebrated with singing and dacingA.as B.that C.when D.which为毛选D不选c?

英语单选语法题求助!oct,1st,（ ）is our national day,is always celebrated with singing and dacingA.as B.that C.when D.which为毛选D不选c? The People's Republic of China__.A.found on 1949,Oct.1 B.founded on Oct 1 th,1949C.was found in Oct 1 st,1949 D.was founded on Oct 1 st,1949选哪个,原因 求助英语单选. 英语年月日的书写?为什么oct.1st,2009,1后面加st,但有时加th呢?是怎么回事? 急,求英语短文100字,主题为my plan for the oct 1st holiday 求助英语单选.,只有几道 求助英语单选.求理由谢谢 英语单选题求助! 求下列英语单选语法题的解析 完整缩写形式Dec. 1st【 】 Oct. 2nd【 】Sept. 3rd【 】 Aug.4th 【 October可以简写为oct.October 1st可以简写吗 高中英语单选求助 单选求助 英语选词填空和单选求助 ___on Oct 1 st,1949, the people Republic of China celebrated her 60thbirthday on Oct 1st last year.A.Built B.Founded C.Established D. Created请解析 Oct 1st,1949 ------ ------ ------ ------ Chinese people1949年10月1日对中国人民来说是有伟大意义的 We will celebrate the 60th a---- of the founding of the PRC on Oct .1st next year our country,s birthday is_________.a on October 1st,1949 b 1949,on October 1st单选