Is this Mary's father 改为否定回答This is Jack‘s daughter.改为一般疑问句is,this,family,my（.）连词成句Are those your grandparents 作肯定回答

Is this Mary's father 改为否定回答
This is Jack‘s daughter.改为一般疑问句
is,this,family,my（.）连词成句
Are those your grandparents 作肯定回答

No,he isn't
Is this Jack's daughter?
This is my family.
Yes,they are.