你所问的问题中,也就是题干,就是陈述句
否定句：i don't have to clan the classroom.We don't have to wear school uniforms.He didn't have to hanve lunch in the cafeteria.John doesn't have to wear sports shoes for gym class.His sister didn't have to wear school uniforms.
一般疑问句和肯否定回答放在一起了：Do i have to Yes,I(you) do .No,I (you )don't.
Do we have to Yes,we(you)do.No,we(you)don't.
Did he have to have lunch~Yes,he did.No,he didn't.
Does John have to wear~Yes,he does.No,he doesn't.
Did his sistier have to Yes,she did.No,she didn't.