It is important to respect and understand Japanese customs.

The calculation of arccosine is a part of trigonometry.

There is a wolfberry tree in my garden.

I maintain my health by drinking wolfberry every day.

Mr. Ichii is my best friend.

I will attend the meeting on his behalf.

He is tackling his job with all his might and sincerity.

Yesterday, there was a water outage in our area.

There is a very delicious sushi restaurant near my house.

Participation is optional.