Ex18: Put in the present prefect or past simple of the verbs in brackets:
1. I ......... (do) all the housework. The flat is really clean now.
2. He ................ (write) a novel for two years, but he ..................... (not finish) it yet.
3. My brother ................... (leave) home 10 years ago. I ...................... (never/meet) him again since then.
4. What ............. you ............. (do) last weekend? ....................... you .................... (play) golf?
5. I like your car. How long ................... you ..................... (have) it?
6. Mai .................. (buy) a new dress last month but she ................... (not wear) it yet.
7. Mr.Quang ...................... (teach) Math in this school since he ..................... (graduate) from the university in 1989.
8. ..................... you ..................... (hear) of Agatha Christie? She ................ (be) a writer who ................. (die) in 1976. She .................. (write) more than 70 detective novels. ..................... you ....................... (read) any of them?
9. When I ..................... (get) home last night, I .................... (be) very tired and I ..................... (go) straight to bed.
10. Daneil .................... (earn) some money last week. But I'm afraid he ........................ (already/spend) it all.