Question

ПОМОГИТЕ!! ДАЮ 25 БАЛЛОВ
PRESENT PERFECT/ PAST SIMPLE
Выберите правильную форму:
Is that a new mobile phone?
Yes, I've just bought/ I just bought it
How much has /did it cost?
It has cost/ cost £18

Have you done/ Did you do your homework yet?
Yes, I 've finished/ I finished it last night. What about you?
No, I haven't finished/ didn't finish it yet
I have started/ I started it yesterday but I've still got a lot to do.

Answer 1

1) I've just bought it
2) How much did it cost?
3)It cost
4) Have you done?
5) I have finished
6) No, I haven't finished
7) I started