1)Isaac Newton discovered some important laws of physics, didn't he? He was a physicist, wasn't he?
2)Savva Morozov helped poor people, didn't he? He is a good humorist, isn't he?
3) He is a good swimmer, isn't he?
4)Anna Pavlova is a world-famous ballet-dancer, isn't she?
5) His elder sister works at school, doesn't she?
6) Her two sisters were also poet, weren't they?
7) I dont want to play the violin, do I?