Change the verb into the correct form:
1. London _____ (be) in England.
2. The summer _____ (be) hot.
3. She _____ (drive) very well.
4. They _____ (open) the store at 8:00.
5. Linda ______ (be) a very pretty girl.
6. I ______ (have) several jobs.
7. Water ____ (boil) at 100 degrees.
8. Water _____ (freeze) at 0 degrees.
9. My sister ____ (speak) English.
10. He _____ (have) a big apartment.
11. A triangle _____ (have) three corners.
12. My birthday _____ (be) in June.
13. Books _____ (have) pages.
14. Dogs ____ (be) good friends.
15. I _____ (work) hard.