Помогите с этим заданием, буду очень благодарна. Только под римской цифрой 3

1. Is there a shop in this street? 2. A pen is on the table. 3. I see a mistake in your paper. 4 The Soviet Union is my home country. 5. Is that a cat? Yes, it is. The cat is white. 6. Mr.Petrov is a Soviet diplomat.