As a verb:
* "I had to redo the entire presentation after I realized I had forgotten a key point."
* "The teacher asked us to redo the assignment because many students didn't follow the instructions."
* "Let's redo the scene one more time, but this time, try to be more expressive."
* "My boss asked me to redo my report because it had several factual errors."
* "We'll need to redo the whole plan if we can't secure funding."
As a noun:
* "This project needs a complete redo; it's just not working."
* "After the first attempt, the team decided to go for a complete redo."
* "The contractor agreed to a redo of the entire kitchen, free of charge."
* "This is my second attempt; I hope this redo is better."
In different contexts:
* "The architect requested a redo of the blueprints after discovering a design flaw."
* "After the accident, the driver had to redo his driving test."
* "The singer did a redo of her classic album to celebrate her anniversary."
Remember, the specific context of your sentence will determine the best way to use "redo."