1. — Has she finished (finish) cleaning the room yet? — No, she _______. She _______ (clean) the room now. — How long _______ she _______ (clean) the room? — She _______ (clean) the room for an hour.

Решение:

1. Has she finished cleaning the room yet?
2. No, she hasn't finished. She is cleaning (clean) the room now.
3. How long has she been cleaning (clean) the room?
4. — She has been cleaning (clean) the room for an hour.

Ответ: has finished; hasn't finished; is cleaning; has been cleaning; has been cleaning.