I have to study more.

He is making an effort every day to pass the exam.

He is endeavoring every day to pass the exam.

The conclusion of his talk was that we need to make more effort.

We decided to conclude the discussion.

My motto is to always live positively.

I like cocktails with a little bit of vermouth added.

Your cooperation is needed for this project.

I need you.

He is my best friend.