We have started a campaign to advertise our new product.

Genetic factors are affecting his illness.

He started writing his autobiography.

Reading his biography, you can understand how difficult his life was.

He was in the garage to repair the car with a rear protrusion.

He decided to start a new life in a foreign country.

He is immersed in the study of pterygoid processes.

This mirror has a convex surface.

We are considering marriage next year.

I was surprised by his wild behavior.