we haven't gone to London for 2 years
I have never visit Hanoi before 
I have learned English for 5 years
The last time I saw her was in 2010
this is the first time I have eaten this kind of food
I have worked for this company for a year
the last time I read that book was on November 20th
this is  the first time I have eaten with knives andfolks
I haven't visited Dalat for 10 years
she last phoned home 2 weeks ago

11. he has never gone abroad before
12. she has driven for 1 month
13. we have eaten since it started to rain
14. I haven't had my hair cut since I left her
15. she hasn't kissed me for 5 months
16. we haven't met for a long time
17. i haven't had such a delicious meal (like this) before
18. the saw time i saw him was 8 days ago
19. it is Monday since I took a bath
20. the last time I went to a concert was over a year ago