Поставьте вопросы к подчеркнутым членам предложения

1. Who is a first-year student? — My friend is a first-year student.2. Where does his father work? — His father works at a hospital.3. What is he drinking now? — He is drinking coffee now.4. When will she be at home? — She will be at home tomorrow.5. What was I writing yesterday at five o'clock? — I was writing a letter yesterday at 5 o'clock.6. Who has entered our Academy this year? — Many young people have entered our Academy this year.7. Whose mother doesn't work here? — My mother doesn't work here.8. What will she have cleaned by their arrival? — She will have cleaned the flat by their arrival.9. Whom has my sister rung up? — My sister has just rung me up.10. Does she know English well? — She knows English well.