c3 la have flown nha bn

1. She hasn't come back home for 4 years.
2. He has worked as a bank clerk for 3 months.
3. We have not flown to Singapore for 5 years.
4. I haven't had my hair cut since November.
5. We haven't called each other for 5 months.
6. We haven't met each other for a long time.
7. How long have you had it?
8. I have never had such a delicious meal.
9. The last time I saw him was 8 days ago.
10. Today is Saturday. I haven't taken a bath since Wednesday.
(It is three days since I last took a bath.)