6. I **am not working** at the moment because I have no tools.
7. Nam **hasn't done** his homework yet.
8. I **have lost** my pen. Can I borrow yours, please?
9. My father **bought** an expensive new car.
10. A: **I have reserved** a room here for tonight.
B: Yes, madam, what's your name, please?

11. Peter and his brother **have been learning** English for years.
12. Mr. Green **plays** chess since eight o'clock.
13. It **is not raining** since last week.
14. We **have not seen** our new teacher yet.
15. I **have been studying** very hard for this examination.

8. have lost

10. reserve
11. have learnt
12. has played
13. didn't rain
14. haven't seen
15. studied