1.The last time Nam phoned Chau was 5 years ago.
2.Linh hasn't written to Vu before
3.Dat hasn't seen Nhi for 3 days.
4.It's the first time we have watched this film.
5.The last time he helped her was 5 months ago.
6.How long have you learnt E?
7.I haven't wrote a letter to my aunt since May.
8.Nga has learnt French since last year.
9.I haven't seen her since 2000.
