what is your birthday?这句话有语病吗,还是应该 when is your birthday?

就画线部分提问.1.Li ming's grandfather is ___sixty_eight____.-------,-------is Li ming's grandfather?2.His blue T-shirtis is ------35dollars.------- --------is his blue T-shirt?3.My birthday is ------October first.-------- --------your birthda What is your mother what is your name? What is your brother? What () is your ruler what is your What is your choice? what is your what is your what is your name What is your aunt? what is your hobby what is your mother? what is your what is your favourite what your name is? what is your hobby? what is your hobby