1.We have learnt English for five years
2.I have lived in Ho Chi Minh when I was 8
3.She started teaching children in this remote village for 5 months.
4.The last time he wrote to me was since April
5.She last swam was five years ago.
6.They haven't talked to each other for two months.
7.She hasn't seen her elder sister since 1999.
8.It's year since she wrote to me
9.They haven't cleaned their room for two weeks.
