https://www.englisch-hilfen.de/en/download/test_tenses_en_answers.pdf
E truy cập vào link này để xem họ giải nhé

https://www.englisch-hilfen.de/en/download/test_tenses_en_answers.pdf

EX2
1 She hasn't come back to her hometown for 4 years.
2 He has worked as a bank clerk for 3 months. 
3 We have flown to Singapore for 5 years.
4 I haven't had my car cut since in November.
5 We haven't called each other for 5 months.
6 We haven't met 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.