I have a math test tomorrow.

The prince is my best friend.

Applying plaster to the wall is difficult.

He has high negotiation skills.

Understanding the spirit of Kōa is important in understanding Japanese history.

This factory is manufacturing military equipment.

The emperor is a symbol of Japan and represents the unity of the people.

He wants to improve his sailing skills.

We are planning to sail during the summer vacation.

My body has started to produce antibodies against the new coronavirus.