I have many hobbies, all of which make me happy.

All concerned parties should attend the meeting.

She knows all about the city.

I pulled an all-nighter studying for my final exam.

To all appearance, he seems happy.

She is an all-round athlete, excelling in many sports.

We had an all-night study session for the final exam.

This is the all-time highest score in the history of the game.

I have been working on this project all day.

The siren sounded the all clear, indicating the end of the air raid.