I (live)......here since 1989. They (work).....for this factory for 20 years

1.      1. I (live)                             here since 1989.
2.      2. They (work)                             for this factory for 20 years.
3.      3. He (read)                              this novel three times.
4.      4. Hoa and I (know)                              each other since we were at the same class.
5.      5. I (not/see)                          her since last month.
6.      6. I (not/work)                            have not worked today.
7.      7. We (buy)                            a new lamp.
8.      8. We (not/plan)                           our holiday yet.
9.      9. Where (be/you)                               ?
10.  10. He (write)                               five letters.