1) Did you visit your parents last week?
You didn't visit your parents last week
2) Did he make a lot of mistakes in yesterday test?
He didn't make a lot of mistakes in yesterday test
3) Was she was swimming yesterday at this time?
She wasn't swimming yesterday at this time
4) Were they flying to Moscow last month at this moment?
They weren't flying to Moscow last month at this moment.
5) Has he come home bу 9p.m?
He hasn't come home bу 9p.m
6) Had she left the room when you phoned?
When you phond she hadn't left the room yet.