Поставьте вместо пропусков have/ has или did

Question

Олечка Шпак Ученик (243), закрыт 7 лет назад

1 It ...never been so cold here
2 When ...it happen?
3 ...you seen him recently?
4 I ...not know about it.

Answer 1

1 It has never been so cold here
2 When did it happen?
3 Have you seen him recently?
4 I did not know about it.

Answer 2

1.It has never been so cold here.
2.When did it happen?
3.Have you seen him recently?
4.I didn't know about it.