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 programme,will they? No, they won't.