Вопрос по английскому языку:

Поставьте глаголы в скобках в нужную форму.
19. Run downstairs. Your sister... for you. a)wait b)waits c) is waiting
20. – What she ",? – She is a secretary at our college. a) does b)is doing c) do
21. I ... home after the party yesterday. a) walk b) was walking c) walked
22. I came in and saw Pete who ... TV. a) watched b) was watching c) watch
23. Yesterday while Dad (shave) he (cut) himself slightly. a) was shaving, cut b)
shaved, cut c) was shaving, was cutting