I visited my grandparents in the countryside.变成否定句

题目

I visited my grandparents in the countryside.变成否定句
I visited my grandparents in the countryside.
变成否定句：
一般疑问句：
肯定/否定回答：

答案

I didn't visit my grandparents in the countryside
Did you visit your grandparents in the countryside?
Yes, I did
No, Ididn't