He laughed heartily.

He always deliberates carefully before making important decisions.

He deliberated carefully before making an important decision.

She seemed to have a hard time climbing the stairs because she was pregnant.

This problem is difficult.

Mutsuhito is my best friend.

Takajitsuko is my best friend.

The myth of Tsukuyomi is deeply rooted in ancient Japanese culture.

He loves vampire movies.

I have to submit the report by the end of the month.