This room is too dark to see anything without a lamp.

I saw a beautiful butterfly in the park.

Nagame is my best friend.

The next morning, he woke up early and went jogging.

Due to the effect of the lunar tide, the sea level rises and falls.

Without his help, we wouldn't have been able to complete this project. That's why we prize his presence.

This app is really convenient.

He wrote off my debt.

He was able to write off the debt.

According to the latest public opinion poll, it has become clear that many people are in favor of environmental protection.