1. I had just put the pie in the oven when I heard the cat go meow.
2. When I won at loto, friends that didn't even say hello to me before suddenly appeared.
3. When I was feeding the cute puppies, a nut fell down from the tree.
4. Were you on a trip in Brașov before writing the English essay?
5. He didn't buy the coloured pencils before thinking if he would colour the house green or blue.