You should protect your own health.

Please teach me how to do this problem.

It is important for us to respect cultural diversity and understand each other's differences.

Many insects live in the vicinity of the roots of this tree.

Nakata is my best friend.

This person is my new friend.

That person (polite) is my boss.

A bus passes in front of my house every day.

I sent him three letters.

He is recognized as the authority of that project.