1. There …………………. twenty-five students in this group. 2. There ………………….. a lot of causes of bad teeth. 3. There …………………. one window in this room. 4. There ……………….. two doors in that classroom. 5. There ……………….. five doctors here. 6. There ……………….. a foreign student in our group. 7. There ………………. a lot of cases of the grippe in winter. 8. There ……………….. a bad tooth in his mouth. 9. There ………………… two causes of stomach ulcer. 10. There ………………..a lot of dentists at the conference. 11. There ……………….. a lot of people here. 12. There …………………a cause for his complaint. 13. There ………………… a doctor and two children in Room Six. 14. There ………………… two children and a doctor in this room.