Uzupełnij poniższe dialogi podając odpowiedzi według wzoru.

Wzór: Has lunch been cooked yet?
It's just being cooked.
1. A: have you typed those letters yet?
B: They...
2. A: Have they built the swimming pool at last?
B: It's...
3. A: Has she made the coffee?
B: It's...
4. A: Have they written their report?
B: It's
5. A: Have they painted the walls yet?
B: They...