my birthday is on May 1st 中得 on 必须要用吗?

my birthday is on May 1st 中得 on 必须要用吗? _______________________________?My birthday is on May 1st. My birthday is on May 1st.My birthday is May 1st.哪一句才对? 在英语里几月几号用介词on,那为什么My birthday is May 1st.不用呢 Do you want（some）bread?My birthday is（on）May 21st.括号里的词用得对吗? Lily's birthday is on 21st May用被动语态改句子Lily ()()on 21st May My birthday is ( )May 21st. A.on B.in C.at My birthday is July 1st.与My birthday is on July 1st.哪个对呢 Is her birthday on May 1th my birthday is May 1st的近义句是什么? my birthday is on on January 21st on January21st 对划线部分提问 下面还 My birthday is on