In urban areas, light pollution makes it difficult to see the starry sky.

Please sit in this seat.

Please wait until your turn.

He was told by the doctor that his uvula is swollen.

The teacher gave me a book.

The teacher gave me some advice.

You must never show this secret key to anyone else.

He was caught by the secret police.

He believes that there is a secret base on that island.

He is rumored to be a member of a secret society.