Using who or Whom

1. Who told you about our plans?
2. Who is our greatest scientist?
3. Whom did Armando send for?
4. Who are those women?
5. Who is your instructor?
6. Who is your friend?
7. To whom is that package addressed?
8. For whom shall I ask?
9. Who do you think can take my place?
10. From whom did you borrow that costume?
11. Who have people elected?
12. Who does she look like?
13. With whom do you plan to study?
14. Who is the new employee?
15. Who do I resemble, my mother or my father?

1 answer

9, 11, 12, 15 are wrong. All of them are objects.