what do you do(on) your birthday为什么要用on

what do you do(on) your birthday为什么要用on what ( )do you get on your birthday “What do you often do on your birthday”是什么意思? What do you do ( ) your birthday?A.in B.on What do you want get on your birthday? What do you get on your birthday?怎么回答 英语翻译What do you do on your birthday?Do your parents have a b what do you want to do on your next birthday?怎么回答 What do you do for your mum on her birthday?( 按实际回答) What do your parents usually (s——) to you on your birthday?括 what special are you going to do on your birthday what speci If you get these things on your birthday,what do you think o