本句中的 family 指家庭成员,应该是复数,所以be 动词应该用 are .
一般疑问句：Are your family going to the park?
肯定回答：Yes,we are.
否定回答：No,we aren't .一般疑问句：Are Kate and Tom going to see a film ？
肯定回答：Yes ,they are.
否定回答：No,they aren't.