1. Mr Green (teach) English in this school since he ( graduate) from the university in 1986
2. He (write) a book since last year
3. You (watch) TV last night?
4. I (read) the novel written by Jack London several times before.
5. Someone (steal) my handbag on the bus
6. Last month, I (be) in the hospital for ten days
7. My father (not smoke) for five years
8. You ( receive) any letter from your parents yet?
9. He (leave) home two weeks ago and we (not hear) from him since then.
