Chia động từ trong ngoặc

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

9. Where (be/ you) ______________?
10. He (write) ______________ five letters.