1. How long you HAVE you KNOWN Mr. Morgan?
2. He HAS BEEN WORKING as a teacher for 5 years.
3. Diana HAS COME to his friend`s house.
4. They HAVE BEEN LIVING here since 2010.
5. The workers HAVE BUILT the house
6. The girls HAVE BEEN DANCING since 3 p.m.
7. They HAVE BEEN TRAVELLING for a month already.
8. Sue HAS KNOWN Sally all her life.
9. Alice HAS always WANTED to visit Finland.
10. I HAVE BEEN READING this book for two hours already.