Какова зависимость энерготрат от физической нагрузки человека?

1) They will arrange the date and time of our meeting, won't they?
2) Her pen friend studies at a Local State School in London, doesn't he?
3) Our parents don,t play sports, do they?
4) My sister can speak and read German well, can't she?
5)Their Head Teacher didn,t get the invitation, did he?
6) Linda,s friends were responsible for the music, weren't they?
7) We couldn,t go to the theatre together, could we?