It's important to believe in yourself.

He is my tennis partner.

Prevention of sexually transmitted diseases is very important to protect your own health and that of your partner.

He has confidence in his own abilities.

Health is very important.

His opinion is very important.

Please don't forget to wash your hands and wear a mask for the prevention of a cold.

To prevent a cold, let's take a lot of vitamin C.

He is very healthy because he exercises every day.

Health is more important than anything else.