1 Barbara Grey works in East Square London School, doesn't she? Yes, she does.
2 Mr. Wooding invited a group of Russian students to London, didn't he? Yes, he did.
3 A group of up to 22 people can go to London, can't they? Yes, they can.
4 The Russian students will stay with English families, won't they? Yes, they will.
5 The Russian students won't be responsible for the social programmer, will they? Yes, they will.