He increased the time spent together to deepen his relationship with her.

It is important for us to deepen our friendly relations with neighboring countries.

We have built a long-standing friendship.

Yuko is my best friend, he always helps me.

Health is very important.

His opinion is very important.

We have maintained a good relationship for a long time.

His research is deeply related to my project.

I go jogging every day.

I am studying Japanese.