16. She has been living in Hanoi for 2 years.
17. He have been studying English since he was young.
18. This is the first time I have ever eaten this kind of food.
19. She is the most beautiful girl I have ever seen.
20. I have never read a better novel than this before.
21. This is the first time she has drunk whiskey.
22. This is the first time he has known me.
23. We have never visited Ha Long bay before.
24. It has been 5 months since the last time she kissed me.
25. I haven't had my hair cut since I left her.
26. We haven't met for a long time.
