1.I am not a doctor.are you a doctor?yes I am .No,I'm not.
2.he isn't a teacher.Is he a teacher?yes,he is.no,he isn't.
3.they doesn't like playing the guitar.do they like playing the guitar?yes ,they do.no,they don't
4.she dosen't play the game well.does she play the game well?yes,she does.no,she doesn't
5.we didn't went to beijing last week.did you went to beijing last week?yes,we did.no,we didn't
6.he didn't read the book yesterday.did he read the book yesterday?yes,he did.no,he didn't
7.jim isn't a naughty boy.is jim a naughty boy?yes,he is .no he isn't.