I take cod liver oil every day for nutritional supplementation.

He changed the engine to improve the performance of the car.

My car needs to have its engine replaced.

He is in a sinecure.

The state control in response to the emergency has been strengthened.

The government began to control the actions of citizens on the grounds of an emergency.

This book was editorially supervised by a famous author.

He supervised the editorship of this book.

That news is a big topic in society.

She was told by the doctor that it is difficult to get pregnant due to a problem with her fallopian tubes.