Употребить правильную форму глагола tobe

You are welcome. The metro station is far from my house. Mary and Nelly are friends. It is 5 o'clock now. How are you? How old is Mary? What country is she from? How far is it from here? They are glad to see her. It is not of her to say so. -Are at home now? -No, I am not at home, I am at work. -Are your brother a doctor? -No, he isn't. He is a student.