1If you make a mistake while typing, you can undo the action by pressing a certain key.
2Can you undo the changes you made to the document?
3She decided to undo her decision to quit her job and stay with the company.
4If you don't like the new layout, you can undo the changes and go back to the original design.
5The company tried to undo the damage caused by the scandal, but it was too late.