Present perfect tense.
1. He ( be ) a singer
2. Sandra ( have ) a computer
3. The universe ( exist )
4. We ( live ) in France
5. It ( not/ rain ) .
6. We ( be ) in this school
7. I worry about Tony, I ( not/ see) him
8. She ( have ) her dog
9. I ( play ) tennis
10. She ( be ) successful
11. I ( be ) in New York
12. My sister ( live ) in Sydney
13. He (not/ stop) making noise
14. He ( teach ) us the lesson
15. John ( work ) in New York
16. We ( know ) our English teacher