In Japan, husband and wife retaining different surnames is not yet recognized.

My father likes to tell dad jokes.

This old house is covered with thatch.

The human immunodeficiency virus destroys the immune system, making the body unable to fight disease.

It is important to learn about the prevention and treatment of the human immunodeficiency virus.

Please take this medicine one sho at a time.

He is our salvation.

This job is a little more difficult than I thought.

He left early to avoid the problem.

Did you hear his voice?