Вставьте глагол to be в настоящем времени: 1. My mother ... a shop-assistant. She ... at work now. 2. My sisters ... students. They ... at yhe University now. 3. This ... my book. It ... on yhe table. 4. Where ... the dog? It ... on the chair. 5. I ... a doctor. I ... at home now. 6. They ... not in Moscow now. They ... in Paris. 7. Where ... she ? She ... in her room.