I was chosen as a committee member of the school.

Participation is optional.

He chose to act on his own free will.

He is tackling his job with all his might and sincerity.

I am participating in the committee for the new project.

Please choose anything you want.

Do you have something to drink?

We need personnel who can handle any problem.

Above all, grammar is the most important in learning Japanese.

If you don't mind, you can use my car.