when's your grandma's birthday?(根据实际回答)

when's your grandma's birthday?(根据实际回答) when's your birthday?回答方式 WHEN IS YOUR MOTHER S BIRTHDAY (回答) when's your birthday? When's your great-grangpa birthday?怎么回答 ------When is your mother's birthday?(回答问题） When is your father's birthday?怎么回答呀? when' s your birthday party? Your grandma grandson's And when is your father's birthday? When is your mother's birthday? When is your friend's birthday?