have to 做谓语的一般疑问句,肯定回答和否定回答以下这两种形式是否都正确?请哪位大虾告知?
例如：Do you have to take care of your father at home?
肯定回答：Yes,I do..或者Yes,I must.
否定回答：No,I don't.或者No,I needn't.