(+)
1. I went to the cinema yesterday.
2. I sent a message to you.
(?)
1. Did you complete your homework?
2. Did you asked teacher about this?
(-)
1. You didn't call me a week ago.
2. They didn't want to do that.
_________________________________
Past Continuous(Progressive)
(+)
1. I was writing a letter yesterday at 5 o'clock
2. He was walking in the park, when I was doing my homework.
(-)
1. We were not busy at that moment, when we were reading a book.
2. You weren't talking to me when the teacher asked you.
(?)
1. Was he busy yesterday from 9 till 10?
2. Were we there at 5 o'clock in the evening?