**Here are some examples of using the word «briefcase»:**
1. I always keep my important documents in my briefcase to keep them safe.
2. She opened her briefcase and took out a folder with the report inside.
3. He put his laptop and pens into his briefcase before leaving for work.
4. The thief stole my briefcase while I was on the train.
5. She carefully placed her new briefcase on her desk, feeling proud of her new purchase.
6. He opened his briefcase and showed us the contract he had just signed.
7. She left her briefcase at home and realized she forgot it when she arrived at work.
8. He bought a new briefcase for his upcoming business trip.
9. She put her keys and wallet into her briefcase before heading out.
10. He left his briefcase at the office and forgot about it until the end of the day.