Добавить правильные окончания: 1)it's nice to invite briyish students, 2)you are responsible for a social programme, 3)they didn't arrange a date of the competition, 4)it was a group of 17 students, 5)she'll stay with her partner's family, 6)the accommodation costs weren't very high'

1) It's nice to invite Briyish students, isn't it?
2) You are responsible for a social programme, aren't you?
3) They didn't arrange a date of the competition, did they?
4) It was a group of 17 students, wasn't it?
5) She'll stay with her partner's family, won't she?
6) The accommodation costs weren't very high, were they?