He completely lost his grasp of the problem.

He contracted brucellosis because he was working on a farm.

They (referring to women or girls) are my best friends.

He created a mnemonic to learn a new language.

I think he is really a shameless person.

He is really a shameless person.

A new project has begun.

His design is always full of playfulness.

Kokoro is my best friend.

His heart was very kind.