1. she has painted this picture for 5 days.

2. Minh has collected stamps since 2000.

3. the last time I spoke to her was three years ago./ I last  spoke to her was three years ago./ I have spoken to her since three years.

4. they have used this car for a year.

5. I hve never used such a  good computer game before.

6. This is the first time he has played a computer game.

7. the last time  we saw her when we left university./ we last saw her when we left university.

8. I have never played a computer game before.