He turned the car key to start the engine.

Could you tell me the toll-free number?

There is an old radio cassette in my room.

My grandfather still uses an old transistor radio.

He is operating a radio-controlled helicopter.

Please sit in this seat.

Please wait until your turn.

We are watching a movie on the subchannel.

He decided to literally change the riverbank in order to change the direction of his life.

The teacher gave me a book.