He was a teacher last year

He wasn't a teacher last year.
Was he a teacher last year?
Yes ,he was./No,he wasn't.
They weren't my 8 friends
Were they your 8 friends?
Yes,they were./No,they weren't.
I wasn't a student in 2008.
Were you a student in 2008?
Yes,I was./No,I wasn't.
I didn't go fishing with my mother yesterday.
Did you go fishing with your mother yesterday?
Yes,I did./No,I didn't
He didn't swim in the river yesterday afternoon.
Did he swim in the river yesterday afternoon?
Yes,he did./No,he didn't
每题按否定句,一般疑问句,肯定回答,否定回答的顺序