Did your mother buy you a present on your birthday?的被动语态是什么

Did your mother buy you a present on your birthday?的被动语态是什么 what ____ did your father buy for you on your birthday?A new when did your father buy you the mobile phone 换为被动语态 when（ ） What present will you give to your mother on her birthday? Did you have a good time on your birthday?是什么意思? my mother gave me a present for my birthday改为被动语态 How did you keep your classroom clean?变为被动语态. Did you share your sister some cake?改为被动语态 what did you get your birthday A. -Are you going to buy a dress for your mother's birthday? Does your mother help you with your English主动语态句子改为被动语态 mother,what,for,buy,you,your,did ) [连词成句].