The speed limit on this road is 60 kilometers per hour.

He is my classmate.

My mother was surprised when she saw my report card.

He publicly admitted that he is a bisexual.

The sinusoid is used to represent many phenomena in nature.

His standard of living has improved significantly.

His brother was diagnosed with schizophrenia a long time ago.

Sexual reproduction is one of the methods of reproduction in organisms.

I think he has a high aptitude for music.

My grandparents are healthy and living a long life.