Номер 6,заранее спасибо

1) They will arrange the date and time of our meeting, wont they
2) Her pen friend studies at a Local State School in London, doesnt he
3) Our parents dont play sports, do they
4) My sister can speak and read German well, cant she
5) Their headteacher didnt get the invitation, did  he
6) Lindas friends were responsible for the music, were not they
7) We couldnt go to the theatre together, could we