The parts of this machine are severely worn and need to be replaced.

If you use them every day, shoes wear out quickly.

It's difficult to find the blind spot of that problem.

Please tell me that story once again.

He was wearing a hat made of felt.

That information is unnecessary.

That information is completely unnecessary.

He thinks that war is a necessary evil.

Do you understand the necessity of this project?

I prefer tea over coffee.