How can you use the word undo in a sentence?

Answer 1

The boy was in hurry to undo the ribbon and open his present.

We cannot undo our actions, but we can try to undo any harm they cause.

It can take several hours to undo all of the unhelpful changes by a novice user.

Answer 2

Here are 2 examples:

"I clicked the undo button to remove the mistake I just made."

"I wish I could undo every mistake I have ever made."

2 sentences:

"I don't want my paper to have that sentence!" "Okay, I will undo that sentence."

Answer 3

The opposite of undoing is doing.