Choose suitable form of the verbs. In some cases both answers are correct.
1.She’s been knowning / known her best friend for 5years.
2. You’ve seen / been seeing me for a quite a long time.
3. He’s been forgotting / forgotten to take his wallet.
4. My eyes are so red because I’ve been sitting /sat in front of the computer all day.
5. They’ve lived / been living in Paris since they were born.
6. How long has he worked / been working in the same company?