My younger sister attended the party wearing a costume.

He is my natural enemy.

Every year, when the New Year comes, I pray for health and happiness.

I pray for health every day.

I think all his stories are fabrications.

We are planning to hold a wedding ceremony next week.

I feel exhausted from studying for a long time.

He collapsed from fatigue.

We visited that monument and learned about its history.

In this area, beneficial animals play an important role in maintaining the balance of nature.