I lost my precious belongings.

He utilized his project management skills to start a new business.

He submitted a formal affidavit to the police.

He gave a statement to the police about his actions.

Do you understand the necessity of this project?

That information is unnecessary.

That information is completely unnecessary.

We need cooperation to make this project successful.

We have to cooperate to make the project successful.

He is a professor at the University of Tokyo.