When to use (about, at, of, with) when filling sentences?

1. Use "about" when discussing a topic or subject:
- I read a book about the history of ancient civilizations.
- Let's talk about your plans for the weekend.

2. Use "at" when referring to a specific location or point in time:
- I will meet you at the park at 3 PM.
- She works at a hospital in the city.

3. Use "of" when indicating possession, origin, or relationship:
- The color of the sky was a beautiful shade of blue.
- The father of the bride gave a touching speech at the wedding.

4. Use "with" when indicating association, accompaniment, or instrumentality:
- I went to the movies with my friends.
- She painted a picture with watercolors.