1,mother's
2,fifteenth
3,years
4,was(感觉这句句子有问题,你最好检查下)
5,concert
6,events
7,likes
8,an
9,Sally
What's your age?
My birthday is in July.
How old is Tom's brother?
When is Dave's birthday party?
Which game do you have at your school?
When and where was your father born?
还是改的不对,应该有介词in的:What year was your brother born in?