Образовать вопросительные и отрицательные предложения 1) They were at work yesterday

1) They were at work yesterday.
Were they at work yesterday?
They were not at work yesterday.
2) She met her parents 2 hours ago.
Did she meet her parents 2 hours ago?
She didnt meet her parents 2 hours ago.
3) I did homework in the evening.
Did I do homework in the evening?
I didnt do homework in the evening.
4) Tom went to Moscow last summer.
Did Tom go to Moscow last summer?
Tom did not go to Moscow last summer.