Топси пытается задать вопросы,но путает порядок слов.исправь его и напиши вопросы правильно. your sister is this? your brother this is? your her mother is? your his father is?

Is this your sister? Is this your brother? Is this her mother? Is this his father?

1- this is your sister?
2-this is your brother?
3-Your mother is her( сомневаюсь в ответе)
4-His father is your?