Rewrite the sentences

11. Nam began selling lottery tickets in June.
→ Nam has
12. I last saw her three years ago.
→ I haven't ....
13. I haven't written to you for a month.
→ I last
14. He hasn't seen her for twelve years.
→ He last
15. How long you have learnt French?
→ How long ago
16. When did you start to listen to pop music?
→ How long....
17. He has not seen me for three years.
→ The last time
18. The last time he drank was five years ago.
→ He has
19. The last time I smoked was in June.
→ I have
20. She has not seen him since Monday.
→ The last time
21. They started checking the machines two hours ago.
→ They
have...
22. He began fixing the bicycle ten minutes ago.
→ He
has..
23. She commenced cooking the soup half an hour ago.
→ She
has..
24. We began doing the test an hour ago.
→ We
have..
25. Jack began planting flowers three hours ago.
→ Jack has
26. They started building the bridge two years ago.
→ They have
27. Mai commenced writing the lesson twenty minutes ago.
→ Mai has
28. My Vi began counting her lucky money five minutes ago.
→ My Vi has
29. You started flirting with me forty minutes ago.
→ You have