1. While I was driving, I had an accident.
2. While we were cleaning the house, we broke some glasses.
3. Alan was looking out of the window when he saw a UFO.
4. I went to the cinema yesterday.
5. They were going to the cinema when they met me.
6. She was reading the whole evening yesterday.
7. I didn’t play the piano yesterday. I was writing a letter to my friend.
8 I wasn’t playing the piano at four o’clock yesterday. I was reading a book.
Не гарантирую 100% правильность, но надеюсь, что верно))